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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
They aren't fragile but they are brittle. Fossils are mineral crystalisations of decayed organic matter. Basically they are rocks.
How many dinosaur fossils have been found?
Nobody knows how many for sure, but there are certainly thousands.
You've got to remember, fossils aren't necessarily whole skeletons, they might be sections of bone, a single tooth, a fossilised egg, or even a whole nest. Sometimes we get lucky and find whole skeletons, or even scenes from the past, such as a mother looking after her eggs, who died in a sandstorm, or a triceratops and a velociraptor who both died from the wounds they inflicted on each other, fossilised as a single scene, locked in combat even in death.
There are so many different varieties of dinosaur that we have discovered, and so many examples of each species, or pieces of examples, that we can't possibly be sure how many there even are. Some people say we have even only discovered 1% of all dinosaur species! So sorry, no-one really knows.
Hope this helped! :)
Most age dating assumes that the sediment is deposited uniformly, that nature works at a constant rate over time. This is obviously not true because we see sudden changes in nature every day, earthquakes, tsunamis, floods, landslides, etc., all of which affect the estimates.
All fossils that scientists have collected create the?
Fossil record..... which is all of the fossils collected over mil
lions over years also..they havent ever started it over
What are the most common precambrian fossils called?
The most common Precambrian fossils are stromatolites. These are layered structures formed by the growth of cyanobacteria, also known as blue-green algae, in shallow water environments. Stromatolites are important in understanding early life on Earth.
Where was the Megalania fossil found?
Megalania fossils have been found in various locations in Australia, mainly in the eastern and southeastern parts of the country. One of the most significant finds was in the Naracoorte Caves in South Australia.
How do you search a serial number for a fossil watch to check its value?
There are two or three ways to check the secondary value of items. One way is to get a book listing the secondary market value of the item you want to check. In this case you would find a book on watches that list Fossil watches. Another way is to go on EBay and do a search. Find an item that is like the one you have and see what it is selling for or what is the listing price. This will give you an approx. value. The final way is a bit harder and you take your watch to someone to have it appraised. This could cost you a few dollars, probably more than what the watch is worth. Any one of these methods will give you a value of some sort. Many things don't sell on the secondary market unless there is a need or a collector who is looking for that item. The prices on the market also go up and down just like stock.
How far back does the fossil record extend?
Hard-bodied animals date back to the Cambrian era, about 540 million years ago.
However there are earlier advanced soft fossils found in recent years at places like Ediacara in Australia.
However, algae are known from about 3 billion years ago. These guys were the ones which invented photosynthesis, the important bit of which is splitting water into H and O. The O they discharge as waste, and the H they use to make complex biochemicals. When they evolved, the O2 component of the atmosphere was only a few%, and contained much CO2 and methane.
With their new trick of photosynthesis, the algae were able to mop up all (well, most of) the methane and CO2, and when these greenhouse gases disappeared, the world went into a Snowball Earth phase which lasted for a billion years or so, and the oceans were frozen at the Equator.
Much of the iron in the oceans which had been in solution, was precipitated out as iron oxide, and these form the banded iron deposits of great economic importance today.
But the volcanoes were still operating, and the methane and CO2 continued to increase, and eventually raised the temperature of the Earth.
The algae come in brown, red, and green varieties, and all our green plants may have descended from the green algae.
At the level of speculation, siderophile bacteria (which love iron) may have formed on the ocean bottom near Black Smokers, and these may evolve on iron-sulfur hydrothermal vents. These areas are rather inaccessible, and only in recent years have these speculations been offered.
Where were fossils of the earliest human ancestors?
Fossils of human and human-like remains have been found all over the world with no clear chronology. For instance, remains which are dated at one time are found with a more human brow and remains are dated much later with a less human brow, but another more human trait. The problem then is distinguishing the chronology of "earliest" at the same time that human-ness is debatable. A recent arcticle mentioned a "human" ancestor which was the size of a large dog and looked like an anteater. So, in the absence of continuous and complete fosil record, evolutionists are free to claim any definition of chronology and humanity which suits their individual research. That being said most experts agree that the first humans came out of Africa.
PRIOR ANSWER
Africa
How do you make the fossils come back to life in sapphire?
Go to Rustboro City and to the Devon Corp building. On the second floor one of the guys will offer to restore it. Just go up or down a set of stairs and he will be finished and give it to you. Root fossil-lileep Claw fossil-anorith
Yes, fossils can form in ice. This process is known as cryogenic fossilization, where the remains of organisms are preserved in ice over long periods of time. This type of preservation provides scientists with valuable insights into ancient ecosystems and species that lived in cold environments.
1 What conditions must exist in order for fossils to form?
Fossils form when an organism is buried quickly after death in sedimentary rock, allowing the hard parts of the organism to be preserved over time from being compressed and mineralized. The burial process must protect the remains from decomposition and physical damage.
Where are the oldest organisms located in the rock layer?
The oldest organisms can generally be found in the lower layers of rock, as these layers were formed earlier than the upper layers. By examining the relative positions of different rock layers, scientists can determine the ages of the organisms found within them.
Can fossils be used as index fossils?
Yes, index fossils are special fossils that act as geological tools enabling comparison in time of a range of geological units and environment. Normally, they are selected using certain attributes such as the fossil should be widespread, abundant, fast evolving, and independent of their environment.
Baltic amber is often believed to be tree sap but it is resin from the tree. Baltic amber is sometimes sold as jewlery. It can be classified as a gem stone though it is simply hardened tree resin.
How do sharkteeth turn into fossils?
I've included three links, as I found your question very interesting. To be a fossil or ancient remnant, it helps to be in abundance. Sharks lose their teeth and grow new ones. It is important that the remains are not subject to decomposition. The sharks teeth are very hard and covered with enamel. The shark's body is made of cartilage and easily decomposes, so in time all that remains is his scales and teeth. Being buried in sediments or underwater, can protect the teeth from air and bacteria that can cause decomposition. Please see links for more information, including the awesome Stechacanthus shark. Also, one link states that shark's teeth come mostly from the Miocene period. It is probably true that most of the teeth found come from this period. However, sharks were around during the Paleozoic era, Devonian period, and survived the Permian-Triassic time period of massive extinctions. Really quite fascinating
What can cause older fossils to be found on top of yonger fossils?
This situation can occur due to natural geological processes such as faulting or erosion, which can disrupt the original sequence of deposition. These processes can result in older rock layers ending up on top of younger ones, creating an apparent inversion of the typical order of fossil accumulation. It is important for paleontologists to consider these geological factors when interpreting the sequence of fossils in a particular area.
Which era contains fossils of dinosaurs?
Dinosaurs lived during the Mesozoic Era, which is divided into three periods: Triassic, Jurassic, and Cretaceous. Fossils of dinosaurs have been found primarily from the late Triassic to the end of the Cretaceous period.
The half-life is 4 days. That means half of it will be gone in 4 days, and that leaves half of the original sample. In another 4 days, half of the remaining half will have decayed. And that will leave only 1/4 th of the original sample. That means 3/4 ths of the original sample will have decayed. In 8 days, three fourths of a sample of a radioactive element with a half-life of 4 days will have decayed.
Dinosaur fossils have been found on every continent except?
Dinosaurs have been found on all 7 continents, even Antarctica.
A worm would stand a poor chance of being fossilized because?
its soft body is unlikely to be preserved in the fossilization process, which typically requires rapid burial and the gradual replacement of organic material with minerals. This means that the chances of a worm being preserved as a fossil are low compared to harder-bodied organisms.
Evolution doesn't necessarily produce incomplete or half-developed organs because intermediate stages can still provide a survival advantage. Incomplete structures, like half an eye, could provide some function, such as detecting light, which could be advantageous in survival. Additionally, many transitional forms with different stages of organ complexity have been found in the fossil record.
How are fossils organized in the fossil record?
Paleontologists look for index fossils in fossil bearing sedimentary rock. Index fossils are organisms that were widespread, rapidly evolving, and only existed for a short period of time as evidenced by their appearance in the fossil record of specific rock strata. The appearance of a fossil alongside an index fossil gives a rough approximation of the age of the fossil in relative terms as it would appear on the geologic time scale. The appearance of the same fossil alongside index fossils of different geologic ages means that the fossil organism spanned multiple geologic time periods. Associations of specific strata alongside radiographically datable igneous and metamorphic rock determines the absolute age of a fossil.
