0
Fossils
This category is for questions about the bones, fragments, imprints, and other remainders from a different time. The questions and answer you will find here are history set in stone -- our past, immortalized in solid rock. You will also be able to find questions pertaining to the locations of these fossils, how you might identify them, and how they were formed.
3,454 Questions
A siliceous shell is a hard shell made primarily of silica, commonly found in diatoms, radiolarians, and certain types of sponges. These shells are composed of intricate patterns and are formed by the organism extracting silica from their surroundings and depositing it to create a protective structure.
What types of fossils does not form in sediments?
Well there are 3 types of fossils: Petrified Fossils, Molds and Cast, and Preserved Remains. Petrified Fossils are the organisms buried in the layers of sediment. Molds and Casts are the organisms, like shells, buried by sediments, in which they gradually dissolve. Preserved Remains are the organisms preserved in other substances. For example, entire organisms, such as huge elephant-like mammoths that lived thousands of years ago, have been preserved in ice. Therefore, Preserved Remains is a major type of fossil that does not form in sediments.
This can be formed by decades of being stuck in the ice age and eventually falling through the ice and never getting out. Since you cant get out you get frozen! Being frozen and preserved in another type of substance in called... Preserved Remains!
--Hope this could help. Thanks for reading.:)
The answer to Short-lived things is Ephemera which is the plural of ephemeron
In what type of rack do most fossils form?
Most fossils form in sedimentary rock, which is formed from layers of sediment that build up over time. This process preserves the remains of plants and animals, creating fossils.
What organisms form into a fossil?
Organisms that have hard parts such as bones, shells, or teeth are more likely to form fossils. Soft-bodied organisms can also be preserved in certain conditions, such as being quickly buried in sediment or trapped in amber.
What is the most common sedimentary rock formed from mud or clay?
The most common sedimentary rock formed from mud or clay is shale. Shale is a fine-grained sedimentary rock made up of compressed and hardened clay and silt particles. It typically exhibits a characteristic fissile (easily splitting into layers) structure.
What animals died during the ice age?
Animal life in the last Ice Age consisted of a larger diversity of animals closely related to those that live today, including relatives of bears, lions, buffaloes, sloths, and monkeys as well as species known to be extant today. The climate of the time was overall colder in average global temperature, so many types of animals existed that were adapted to the cold (e.g. many types of mammoths); others were adapted towards life on the dry interiors of continents such as North America (e.g. Smilodon cats). A small sampling of extinct species known to have lived in the Ice Age is given below:
Mammuthus primigenius (the woolly mammoth)
Mammuthus columbianii (the Columbian mammoth)
Mammut americanum (the American mastodon)
Smilodon populator (the largest Sabre-toothed cat)
Glyptotherium texanum (giant armadillo)
Megatherium americanum (giant ground sloth)
Coelodonta antiquitatis (the woolly rhinoceros)
Arctodus simus (the giant short-faced bear)
Megalodon carcharodon (the giant white shark)
Panthera Leo spelaea (the cave lion)
Homo neanderthalensis (Neanderthal man)
How are artificial fossils formed?
It is also known as petrified fossil. Petrified or mineralized are formed when remains absorb minerals from the surounding mateial and gradually turn to rock. Let's say it's remains and minerals that turn to stone.
What fossil represents an ancient land environment?
The 164 million-year-old reptile fossils were found on a beach in southern Skye, off the UK's west coast.
The new species forms a missing link between ancient terrestrial turtles and their modern, aquatic descendants.
The discovery of Eileanchelys waldmani, which translates as "the turtle from the island", is reported in the Royal Society journals.
The turtles were found embedded in a block of rock at the bay of Cladach a'Ghlinne, on the Strathaird peninsula.
It contained four well-preserved turtle skeletons, and the remnants of at least two others. The team uncovered four remarkably well preserved turtle skeletons
Missing links
Together, these are the most complete Middle Jurassic turtles described to date.
The historic specimens are now being housed in the National Museums Scotland, Edinburgh.
They were uncovered by a team from London's Natural History Museum and University College London (UCL).
"Why did turtles enter the water? We have no idea. It's a mystery - like asking why cetaceans went back into the sea," said Jérémy Anquetin, of the department of palaeontology at the Natural History Museum.
"Little by little, we are filling the gaps.
"Now, we know for sure that there were aquatic turtles around 164 million years ago.
"Eileanchelys may represent the earliest known aquatic turtle.
"It is part of a new revision we are having about turtle evolution." The Isle of Skye looked very different 164 million years ago
The new species helps bridge a 65 million-year gap in the story - between the terrestrial "basal" turtles, from the late Triassic, and the aquatic "crown-group" turtles of the late Jurassic.
The former were "heavy-built" land-dwellers, with skulls which were "more reptilian", says Mr Anquetin.
The latter were lighter, and closer in appearance to the aquatic, freshwater turtles we know today. I am blown away that the team was able to recover such extraordinary material
Walter Joyce,
Yale University
What happened in between was a mystery, until very recently.
In the last two years, fossils of three new turtle species, all dating to to the Middle Jurassic, have been discovered in Russia, Argentina, and now Scotland.
"The Scottish fossils are the most complete of them all", says Anquetin.
"They tell us a lot about how the primitive 'stem turtles' diversified into the varied forms we see today."
So what would these "missing links" have looked like? Certainly nothing like the marine turtles which are occasionally seen on the Skye coastline today. The rocks at Cladach a'Ghlinne hold many ancient aquatic fossil specimens
On the outside, E. waldmani would resemble a modern freshwater turtle - "like the ones you can buy in the pet shop", says Mr Anquetin.
Head first
"The differences are on the inside - in the cranial anatomy. They are small differences but very important. There is no other turtle like this one."
The fossils have now been recognised as a new species, named Eileanchelys to incorporate "Eilean", the Gaelic word for "island".
"I liked the idea of giving it a name in Gaelic," explains Anquetin.
"So I tried to find words that sound good in Gaelic and Latin.
"I chose 'Eilean', so the whole name means 'the turtle from the island'."
However, the turtles would have lived in a land unrecognisable from the rugged, wind-battered coastlines of modern day Skye.
In the Middle Jurassic, the land mass was much further south, basking in a warm, sub-tropical climate. The fossils were discovered on the rugged shores of Skye's Strathaird peninsula
The turtles probably lived in a landscape of shallow lagoons and freshwater lakes, according to the authors.
Their claims are founded on the geology of the rocks in which the turtle fossils were found - alternating mudstones, shales and occasional limestone horizons - sediments which were laid down in closed water systems.
Other aquatic species, such as sharks and salamanders, were found alongside the turtle fossils.
But remains of terrestrial vertebrates, such as lizards and dinosaurs, were "exceptionally rare".
"If [we accept all this evidence], E. waldmani plausibly represents the first aquatic turtles." The remains are "spectacular in preservation".
Their findings are reported in the journal Proceedings of the Royal Society B: Biological Sciences.
"This new turtle is very exciting", said Dr Walter Joyce, an expert in turtle evolution, formerly of the Peabody Museum of Natural History, Yale University.
"Keep in mind that a 65 million year gap used to exist in the fossil record between the oldest known turtles from the Late Triassic and basically modern turtles in the Late Jurassic.
Jigsaw puzzle
"The new turtle is really quite spectacular in preservation, considering that several complete skeletons are preserved, instead of the usual scrap that has to be pieced together.
"The find confirms that basal turtles were a global phenomenon. It also confirms my research that the split into the primary groups that we see today did not occur until later than originally thought.
"Finally, although it is really difficult to assess the ecological habitat preferences of turtles, the authors make a compelling case that by this stage in evolution turtles had started moving into aquatic habitats."
He added: "I am blown away that the team was able to recover such extraordinary material from the icy cold shores of Scotland, an area generally not known for its turtle fossils!" The fossilised turtle shell reveals the transition from land to sea
- Delicious
- Digg
- StumbleUpon
What are these?E-mail this to a friendPrintable version Print SponsorAdvertisementAdvertisement
SEE ALSOWashed up turtle set to jet out
18 Apr 06 | ScotlandRescued turtle flown to new home
11 Oct 06 | Highlands and IslandsMalaysia's fight to save rare turtle
11 Aug 08 | Asia-PacificTurtle diary: Return to the wild
30 Jun 08 | Science & EnvironmentEndangered turtle born at zoo
11 Aug 08 | Bristol/SomersetBaby turtle gives species hope
16 Dec 04 | Science & EnvironmentMap: Biodiversity hotspots
01 Oct 04 | Science & Environment
RELATED INTERNET LINKSNatural History MuseumRoyal SocietyPeabody Museum of Natural HistoryThe BBC is not responsible for the content of external internet sites
TOP SCIENCE & ENVIRONMENT STORIESObama to revise US space vision
States renew carbon emissions vow
Rotting fish yield fossil clues
| News feeds
- SHARED
- READ
- WATCHED/LISTENED
- Why do people vote against their own interests?
- In pictures: Beautiful birds
- Who said it never rains in Southern California?
- Shoes may have changed how we run
- Google phases out support for IE6
The 164 million-year-old reptile fossils were found on a beach in southern Skye, off the UK's west coast.
The new species forms a missing link between ancient terrestrial turtles and their modern, aquatic descendants.
The discovery of Eileanchelys waldmani, which translates as "the turtle from the island", is reported in the Royal Society journals.
The turtles were found embedded in a block of rock at the bay of Cladach a'Ghlinne, on the Strathaird peninsula.
It contained four well-preserved turtle skeletons, and the remnants of at least two others. The team uncovered four remarkably well preserved turtle skeletons
Missing links
Together, these are the most complete Middle Jurassic turtles described to date.
The historic specimens are now being housed in the National Museums Scotland, Edinburgh.
They were uncovered by a team from London's Natural History Museum and University College London (UCL).
"Why did turtles enter the water? We have no idea. It's a mystery - like asking why cetaceans went back into the sea," said Jérémy Anquetin, of the department of palaeontology at the Natural History Museum.
"Little by little, we are filling the gaps.
"Now, we know for sure that there were aquatic turtles around 164 million years ago.
"Eileanchelys may represent the earliest known aquatic turtle.
"It is part of a new revision we are having about turtle evolution." The Isle of Skye looked very different 164 million years ago
The new species helps bridge a 65 million-year gap in the story - between the terrestrial "basal" turtles, from the late Triassic, and the aquatic "crown-group" turtles of the late Jurassic.
The former were "heavy-built" land-dwellers, with skulls which were "more reptilian", says Mr Anquetin.
The latter were lighter, and closer in appearance to the aquatic, freshwater turtles we know today. I am blown away that the team was able to recover such extraordinary material
Walter Joyce,
Yale University
What happened in between was a mystery, until very recently.
In the last two years, fossils of three new turtle species, all dating to to the Middle Jurassic, have been discovered in Russia, Argentina, and now Scotland.
"The Scottish fossils are the most complete of them all", says Anquetin.
"They tell us a lot about how the primitive 'stem turtles' diversified into the varied forms we see today."
So what would these "missing links" have looked like? Certainly nothing like the marine turtles which are occasionally seen on the Skye coastline today. The rocks at Cladach a'Ghlinne hold many ancient aquatic fossil specimens
On the outside, E. waldmani would resemble a modern freshwater turtle - "like the ones you can buy in the pet shop", says Mr Anquetin.
Head first
"The differences are on the inside - in the cranial anatomy. They are small differences but very important. There is no other turtle like this one."
The fossils have now been recognised as a new species, named Eileanchelys to incorporate "Eilean", the Gaelic word for "island".
"I liked the idea of giving it a name in Gaelic," explains Anquetin.
"So I tried to find words that sound good in Gaelic and Latin.
"I chose 'Eilean', so the whole name means 'the turtle from the island'."
However, the turtles would have lived in a land unrecognisable from the rugged, wind-battered coastlines of modern day Skye.
In the Middle Jurassic, the land mass was much further south, basking in a warm, sub-tropical climate. The fossils were discovered on the rugged shores of Skye's Strathaird peninsula
The turtles probably lived in a landscape of shallow lagoons and freshwater lakes, according to the authors.
Their claims are founded on the geology of the rocks in which the turtle fossils were found - alternating mudstones, shales and occasional limestone horizons - sediments which were laid down in closed water systems.
Other aquatic species, such as sharks and salamanders, were found alongside the turtle fossils.
But remains of terrestrial vertebrates, such as lizards and dinosaurs, were "exceptionally rare".
"If [we accept all this evidence], E. waldmani plausibly represents the first aquatic turtles." The remains are "spectacular in preservation".
Their findings are reported in the journal Proceedings of the Royal Society B: Biological Sciences.
"This new turtle is very exciting", said Dr Walter Joyce, an expert in turtle evolution, formerly of the Peabody Museum of Natural History, Yale University.
"Keep in mind that a 65 million year gap used to exist in the fossil record between the oldest known turtles from the Late Triassic and basically modern turtles in the Late Jurassic.
Jigsaw puzzle
"The new turtle is really quite spectacular in preservation, considering that several complete skeletons are preserved, instead of the usual scrap that has to be pieced together.
"The find confirms that basal turtles were a global phenomenon. It also confirms my research that the split into the primary groups that we see today did not occur until later than originally thought.
"Finally, although it is really difficult to assess the ecological habitat preferences of turtles, the authors make a compelling case that by this stage in evolution turtles had started moving into aquatic habitats."
He added: "I am blown away that the team was able to recover such extraordinary material from the icy cold shores of Scotland, an area generally not known for its turtle fossils!" The fossilised turtle shell reveals the transition from land to sea
- Delicious
- Digg
- StumbleUpon
What are these?E-mail this to a friendPrintable version Print SponsorAdvertisementAdvertisement
SEE ALSOWashed up turtle set to jet out
18 Apr 06 | ScotlandRescued turtle flown to new home
11 Oct 06 | Highlands and IslandsMalaysia's fight to save rare turtle
11 Aug 08 | Asia-PacificTurtle diary: Return to the wild
30 Jun 08 | Science & EnvironmentEndangered turtle born at zoo
11 Aug 08 | Bristol/SomersetBaby turtle gives species hope
16 Dec 04 | Science & EnvironmentMap: Biodiversity hotspots
01 Oct 04 | Science & Environment
RELATED INTERNET LINKSNatural History MuseumRoyal SocietyPeabody Museum of Natural HistoryThe BBC is not responsible for the content of external internet sites
TOP SCIENCE & ENVIRONMENT STORIESObama to revise US space vision
States renew carbon emissions vow
Rotting fish yield fossil clues
| News feeds
- SHARED
- READ
- WATCHED/LISTENED
- Why do people vote against their own interests?
- In pictures: Beautiful birds
- Who said it never rains in Southern California?
- Shoes may have changed how we run
- Google phases out support for IE6
What is a fossil? The answer to this question is largely a matter of what a person thinks it should be. People that work with fossils, called paleontologists, use them to obtain an understanding of ancient environments and life processes, and from this understanding can better describe the history of the earth. Thus fossils, in whatever form they appear, may be regarded as evidence of past life. Fossils may be preserved shells or bone or wood, or they may consist of material that has replaced the original organic substance, while preserving its original form. They may be the hard parts of the organism itself, or simply an impression left by the organism. Organic activity such as the footprints left by the dinosaurs or the trails of crawling insects, or burrows of worms, may be preserved in the rock and be regarded as fossils.
Will the footprints of astronauts on the moon be regarded as fossils someday?Fossils may be very large, as most persons know from pictures they have seen of large dinosaurs, or very, very small, detectable only through the study of rocks under electron microscopes. Fossil spores and pollen of plants millions of years old are commonly studied, as are minute sea organisms dating back to the dawn of life. These small fossils are not noticeable in the field, but can be seen only by examining the rocks with a microscope in the laboratory.
We think of fossils as being in rocks, or at least as being objects that are dug up, or unearthed. This is appropriate, for the word fossil means something dug up. They are also most commonly considered as part of the rock or earth from which they are extracted, and therefore are the same age, or as old as the rocks within which they are found. This is a very important point, because it is the idea that the fossils are of the same age as the rocks that contain them that makes fossils the valuable tools with which the geologist works. Why is this so? In simple terms, the animals and plants that existed at any one time in the history of the earth, have not existed before or since. Sometimes, unique forms of life existed over very short spans of time, and simply by finding one such unique form one may determine the age of the rock in which it is found. Most commonly, however, we find a number of different kinds of fossils which, taken all together, occurred at only one time, although the individuals may have existed with no observable change over longer spans of time.
Brachiopods, small-shelled marine animals, were abundant in Kansas seas more than 250 million years ago.An example of the former method may be where a person was born and died within a year, and simply by seeing his name as being present, we know what year that was. An example of the latter method is where we see a list of a family gathering, with great grandmother and great grandchild, each of who lives to 100 years. We cannot pinpoint with accuracy the time of the gathering knowing only that the great grandmother lived, say from 1772 to 1872, or only that the great grandchild lived from 1871 to 1971, but taken together, we may pinpoint the time of the gathering at the years 1871-1872, the only time during which the lives overlapped. Thus, when we find several fossils in one place whose time spans of existence overlap, the group can tell us how old the enclosing rock must be. The geologist may find similar assemblages of fossils in rocks separated by considerable distances, even oceans, and thus be able to say that rocks from different localities in different states, or even on different continents, are of similar age. This is called correlating the age of the rocks.
As well as the age of the rocks, fossils may be used to tell us about the environments in which the organisms lived and thus in which the rocks were deposited. We observe organisms every day that live in certain areas and not in others, and we can readily understand that at any one time we will find different kinds of organisms that are typical of different environments. For example, the plants that grow in open meadows merge with different plants that grow on the woodland borders, and these in turn are different from those that grow deeper in the forests. Similarly, if one were to picture an ocean shoreline such as that of the Gulf of Mexico, there are certain organisms that live at considerable depths far offshore, a somewhat different assemblage of organisms that live near the shore, another on the shore between high and low tide lines, another well up on the beach or sand bar, another in the shallow lagoon that may be present behind the sand bar, and so on. By studying the rock and the assemblage of fossils within it, it is commonly possible to describe the ancient environment. Importantly, and this is a difficult concept, we may be able to describe different environments that existed at the same time but in different areas. We shall not go into this here, except to mention that the Kansas rocks are very important in giving the geologist information about ancient shallow-sea environments by virtue of the plentiful and well-preserved fossils of different kinds easily found over much of the state. Platecarpus was a mosasaur, a very large marine lizard that flourished in the Upper Cretaceous seas. Note how the paddle-like limbs, ending with webbed feet, adapted this large reptile to a life of swimming in the deep sea. This specimen was one of the earliest collected by the Museum of Natural History at The University of Kansas and is now on display there. It was located in 1890 in Graham County, west of Hill City in the Niobrara Formation.
On the following pages are illustrations and brief descriptions of many of the common fossils found in Kansas. No attempt has been made to use the most perfect of specimens, for they are not the most common. The fossils shown here, on the other hand, are typical of what one may expect to find on a casual outing.
Where may one find fossils in Kansas? Over much of the state, one must merely look at the ground to find them. Do not search on vegetated surfaces, but rather look where the rock is exposed, or nearly so. Look at rocks where the highway has been cut through, or along river banks or in fields where the rocks crop out. Commonly, the action of rain, frost, and wind etches the rock matrix away from the fossil and leaves it exposed in relief, or sometimes frees the fossil entirely so that it simply lies loose on the surface.
A note of caution. One should not carelessly gather fossils, separate them from the rocks, and then discard them. Fossils are important tools to the researcher and are of value to the serious collector. If you find specimens that you wish to collect, they should be wrapped and labeled. You should keep a notebook assigning a number to each specimen and describing with the greatest amount of accuracy the exact location from which the specimens are taken. A description of the rock strata should be included, referring to the rocks above and below, the thickness of the rock layer and its color, other fossils in the same rock, the date and so forth. The same specimen number should be written on the specimen in indelible ink. In this fashion, you will always have a record of the specimen, and this record can be passed on should you wish to trade or donate your find. The exact name of the fossil is not the most important, because the name may change as our knowledge increases, but the locality where it was found will not.
PHOTO HERE of FOSSIL HUNTERS?
Never remove or destroy fossils if you are not interested in them. If you feel that your find is particularly important, especially with regard to fossils of animals with bones or unusually large exposures of delicately preserved specimens, note the locality with precision and contact the nearest college or university natural history museum, or contact the Kansas Geological Survey. In this fashion, the specimen may be properly extracted for the greatest benefit to all. Never disturb remains or artifacts that you may suspect to be of human origin. (It may even be against the law!)
Whether you are on a picnic and discover a fossil, or are a student exploring the curiosities of nature, or are just having some fun in the field trying to find fossils, it is hoped that the following pages will help you gain an idea of what to look for, or what it is that you have found.
Previous Page--Geologic History Next Page--Common Fossils of Kansas
KGS Home Page Education Index Page
Photo of lunar footprint courtesy of Marshall Space Flight Center.
Kansas Geological Survey
Placed online Feb. 1997
URL = "http://www.kgs.ku.edu/Publications/ancient/rep03.HTML"
Send comments and/or suggestions to webadmin@kgs.ku.edu
Do many Christians believe in the Blank Theory of fossil formation?
The theory of fossil formation does not conflict with beliefs held by many Christians. Christians generally believe that God created the world and its processes, so the formation of fossils over millions of years can be seen as part of God's creation. The theory does not necessarily challenge core theological beliefs.
What does it mean to say that the fossils record suggest that evolution occurs among living things?
The fossil record reveals relatively gradual changes in species over time. For example, the earliest horses had three toes and a curved spine, and were quite small. Over millions of years the outer toes migrated up the leg and fused with the leg bone. The teeth changed from browsing on leaves and twigs like those of deer to grazing on grass, more like the teeth of cattle.
How widely is fossil fuel used?
Coal and oil are fairly cheap and abundant fuels, and deposits of these range practically from pole to pole around the globe. Many nations employ extraction technology, and those that don't purchase oil (in particular) as fuel for transportation. So any place an airplane flies or a car, truck, or train may drive, and any navigable water through which a ship may cross, fossil fuel is used.
Where can you find fossils from the cambrain period?
There are a few notable dig sites that have very well preserved fossils from this period. The best sites of the Cambrian period are:
Maotianshan Shales (Chengjiang) 515 Mya Yunnan Province, China Sirius Passet 518 Mya Greenland Emu Bay Shale 513 Mya South Australia Kaili Formation513-501 Mya Guizhou province, south-west China Blackberry Hill~510-500 Mya Central Wisconsin, US Wheeler Shale(House Range) 507 Mya Western Utah, US Burgess Shale 508 Mya British Columbia, Canada Kinnekulle Orsten and AlumShale 500 Mya Sweden ÖlandOrste and Alum Shale 500 Mya Sweden
Where can you find fossils from the Cambrian period?
Prior to the Cambrian life was small and simple. In the Cambrian Period, prodigious change occured, all in the oceans, as the land remained barren. Except for enigmatic forms, all modernanimal phylawith a fossil record, except bryozoa, are represented in the Cambrian. Because some life became mineralized, the possibility of fossil formation greatly increased. Some phyla not represented in the Cambrian fossil record are nonetheless believed to have first appeared during this first period of the Paleozoic Era. Many extinct phyla with unknown relationships to other animals also appeared in the Cambrian. The ostensibly sudden appearance of very diverse faunas over a period of no more than a few tens of millions of years is called theCambrian Explosion. A unique aspect of Cambrian is prevalence of lagerstätten, fossil sites exhibiting exceptional preservation, including preservation of soft tissue parts. The lagerstatten are paramount to science's understanding of the evolutionary origins of complex early organisms that contained the genetic building blocks of life on earth today.
What type of water are fossils mostly found in?
Fossils are not found in water, but rather in the sediment deposits which includes the bottom of a body of water. Fossils are especially prevalent in shallow marine environments where they may become well preserved.
The occurrence of marine fossils in rock strata located high in terrestrial mountain ranges can be attributed to the process of tectonic plate movement. These fossils were originally deposited in seabeds and later uplifted as the plates collided and formed mountain ranges through processes like orogeny. This uplift may have occurred over millions of years, resulting in the marine fossils being exposed at high elevations today.
What type of scientist uses fossils to reconstruct Earth's history?
Paleontologists use fossils to reconstruct Earth's history. They study the remains of ancient plants and animals to understand past ecosystems, climate conditions, and evolutionary processes. By analyzing fossils, paleontologists can piece together the story of life on Earth and how it has changed over millions of years.
A mold fossil is formed when an organism dissolves and leaves an empty space in a rock. This empty space can later be filled by other minerals, forming a cast fossil.
Has the environment where the cynognathus fossil was found change over time?
Yes, the environment where the Cynognathus fossil was found has changed over time. Cynognathus fossils have been found in rock formations that were once part of ancient floodplains and river systems, indicating a different environment from what exists today. The shifting of tectonic plates and changes in climate have altered the landscape where these fossils are now found.
Why is it important for geologists to work gently and slowly while digging up fossils?
Geologists need to work gently and slowly while digging up fossils to avoid damaging the fragile specimens. Careful excavation helps preserve the integrity and details of the fossils, allowing for accurate analysis and interpretation. rushing the excavation process can result in irreversible damage to the fossils, losing important information about Earth's history.
What do paleontologist use to determine the actual age of rocks?
Geologists determine the age of rocks through a process called radiocarbon dating, a process which "peers inside [the] atoms" of the rocks.
For more detailed information about how radiocarbon dating works, check out the related link which is a website with lab instructions for groups in a class.
24 years times 365.24 days in a year / 29.53 days in a lunar synodic month = 296.84 lunar synodic months.
Sorry, I don't know how many lunar synodic months there are in a lunar year. Someone else please finish the answer.
How can scientists learn about an organism's ancestors other than fossils?
Fossils can be used as records because they contain the remains of creatures from long ago. Fossils show evolution (what prehistoric fish were like for example) and they can show what type of climate an area use to be (For example if you find a fish in your backyard then a long time ago that entire area was under water).
How long fossil fuel energy has been used?
Fossil fuel energy has been used for the past couple of centuries, starting with the Industrial Revolution in the late 18th century. The widespread use of fossil fuels like coal, oil, and natural gas has provided a significant source of energy for industrial, transportation, and residential purposes.
What are two ways to date fossils?
Two ways to date fossils are relative dating, which involves determining the age of a fossil in relation to other fossils or geological layers, and absolute dating, which provides a numerical age for a fossil using techniques like radiometric dating.
