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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

How long do you leave in casting slip in a mold for a doll head?

When you pour slip into the mold, wait until the level of the slip goes down half an inch or so and that should be a thick enough casting. There is no set time, because as a mold is used, it gets damper and absorbs water slowly. When you empty the excess slip, you leave a shell of clay behind and that should be about one sixteenth to one quarter inch thick. Any thicker and the piece will crack.

When and where was the first fossil in Antarctica Found?

Peter Barrett is credited with finding the first tetrapod fossil in Antarctica in 1967.

Do fossil bones make seeds?

No, fossil bones do not make seeds. Fossil bones are remnants of ancient living organisms, typically animals, that have been preserved in the rock. Seeds, on the other hand, are reproductive structures produced by plants for reproduction.

How can scientists use a chemical reaction to separate a fossil from limestone without damaging the fossil?

The limestone containing a fossil would be heaated to a sufficiently high temperature (about 1,800 centigrade).then the limestone would become powder and the fossil which is not as sensitive to heat as limestone would remain un damaged

Although you know from chemical evidence that life on Earth evolved as early as 3.5 billion years ago the most ancient available fossils are only 0.54 billion years old This is because of what?

The lack of availability of ancient fossils older than 0.54 billion years is due to geological processes like erosion, tectonic activity, and the recycling of Earth's crust. These processes can destroy or bury old fossils, making them difficult to find and study. Additionally, early life forms may not have had hard body parts that could fossilize easily, further complicating the preservation of ancient life records.

What is the idea the fossils were the remnants of ancient forms of life?

yes they were the remenants of ancient forms of life because actually fossils were the remenants of dead organisms that had lived thousands of years ago. by studying of these fossils we can able to predict the environmental conditions of that period we can also knw the natural predatprs of these organisms and i think the fosils were the remenants of ancient forms life

What are the effects of oxygen on fossil remains?

Oxygen can accelerate the decomposition of organic material in fossil remains through oxidation. This can lead to the degradation and loss of important information preserved in the fossils. Additionally, exposure to oxygen can lead to the formation of minerals that can alter the original composition of the fossils.

What is an object that forms when sediment fills a mold and becomes a rock?

The object is called a sedimentary rock and is formed through the process of sedimentation, which involves the accumulation of sediments over time. As the sediments compact and cement together, they form a solid rock.

Where are most fossils preserved?

Fossils are most commonly preserved in sedimentary rocks, such as sandstone, shale, and limestone. These rocks form when particles settle and accumulate in layers, creating the conditions for fossils to be buried and preserved over time. Areas with ancient lakes, rivers, or coastal regions are often good locations for fossil preservation.

Where do fossils live?

Fossils are the preserved remains or traces of ancient organisms that lived in various habitats such as oceans, forests, deserts, and wetlands. Fossils are typically found in sedimentary rock layers where conditions favored their preservation, such as areas with minimal erosion and quick burial of remains. The specific location where fossils are found varies depending on the type of organism and the geological history of the region.

What did people look like 2000 years ago?

AnswerOver the last 2000 years, people have changed their hairstyles, the clothes they wear and now often wear jewellery. Urban people are now less often sunburnt and would show less sign of skin damage. Because of diet, many people of ancient time were shorter in stature than some modern people.

Apart from these superficial changes, people of two thousand years ago looked much the same as people today. People of Africa had dark skin and looked much like Africans today. The semitic people of of the Middle East had light brown skin and looked much like the Arabs or some Jews of today.

The people of northern Europe generally had fair skins, and blond or red hair, while those in the south were darker. Europe has had many mass migrations, resulting in intermarriage, so that regional differences are less distinctive today.

Apart from the effects of intermarriage amongst ethnic groups, two thousand years is far too short a period to cause any observable change in how people look. Even minor adaptations take tens of thousands of years.

Why are bird fossils rare?

Bird fossils are rare because birds have hollow bones which are fragile and easily destroyed after their death. Additionally, birds are often scavenged by other animals soon after they die, further reducing the chances of their remains being preserved and fossilized. Finally, birds tend to live in environments that are not conducive to fossilization, such as forests or open water.

According to the concept of punctuated equilibrium the sudden appearance of a new species in the fossil record means that?

there was a relatively rapid period of evolutionary change followed by long periods of stability without much change in the species. This suggests that evolution does not always happen gradually and continuously, but rather in punctuated bursts of change.

How do you identify a cercopithecoid fossil?

Cercopithecoid fossils can be identified by their dental formula, which typically includes 2 incisors, 1 canine, 2 premolars, and 3 molars in each quadrant of the mouth. Other features include a bilophodont molar pattern with distinctive ridges and cusps. The shape and size of the skull, as well as the presence of specific cranial features like a forward-facing foramen magnum, can also help in identification.

What are Cast fossils mold fossils petrified fossils trace fossils carbon fossils and preserved fossils?

  • Cast fossils: Formed when minerals fill a mold left by a decayed organism.
  • Mold fossils: Created when an organism's remains leave an impression in sediment that hardens into rock.
  • Petrified fossils: Organic material replaced by minerals over time, forming a rock-like replica.
  • Trace fossils: Evidence of an organism's activity (e.g., footprints or burrows) preserved in sedimentary rock.
  • Carbon fossils: Organisms preserved in carbon-rich environments, like coal or oil deposits.
  • Preserved fossils: Organisms remain intact or partially intact due to exceptional preservation conditions.

Where is the dropping fossils in fossil fighters?

In Fossil Fighters, dropping fossils can be found in various locations throughout the game, including the Greenhorn Plains, Rivet Ravine, Bottomsup Bay, and Cranial Isle. They are randomly scattered on the ground and can be excavated using the stylus and touch screen to uncover new vivosaurs.

How did a walnut become a fossil?

A walnut can become a fossil through a process called permineralization, where minerals replace the organic material of the walnut over time. This preserves the structure of the walnut in stone, creating a fossil. Over millions of years, the surrounding sediment hardens, forming a mineral cast of the walnut.

Are Fossils used to correlate sedimentary rocks that are widely separated by using the rocks distinctive fossil content and applying the principle of fossil succession?

Yes, fossils can be used to correlate widely separated sedimentary rocks by comparing their distinctive fossil content and applying the principle of fossil succession, which states that older fossils in the rock layers are found at the bottom, and younger fossils are found in upper layers. By identifying similar fossil assemblages in rocks in different locations, geologists can establish a relative timeline of deposition and correlate the rocks.

What is a megladon sharks tooth worth?

The value of a megalodon shark's tooth can vary depending on factors such as size, quality, and rarity. On average, a common megalodon tooth can range from $20 to $100, while larger or more pristine specimens can be worth hundreds or even thousands of dollars. It is recommended to have the tooth authenticated by a professional to determine its true value.

What can become a fossil?

anything living can be come a fossil

To become a fossil...

an animal or plant must die in water or near enough to fall in shortly after death. The water insulates the remains from many of the elements that contribute to decomposition.

As time passes, sediments bury the exoskeleton. The faster this happens the more likely fossilization will occur.

As the sediments continue to pile on, the lower layers become compacted by the weight of the layers on top. Over time, this pressure turns the sediments into rock.

As the continental plates move around the earth, crashing into each other, mountains are formed. Former sea floors are lifted up and become dry land. This is exactly what has happened to our trilobite. Now a fully formed fossil, our trilobite is buried under hundreds or even thousands of feet of rock!

Rain, wind, earthquakes, freeze and thaw all work toward erosion. The mountains that were built up are worn away over time.

What fossil used to compare the relative ages of fossils?

An index fossil. An index fossil's age is known, allowing scientists to know the relative age of other fossils based on their position relative to the index fossil. (Ex. If a fossil is deeper in the earth, it is older than the index fossil)

When was smilodon fossils first found?

The first Smilodon fossils were discovered in the early 19th century, with documented findings as early as the late 1700s. These fossils were initially unearthed in North and South America.

The thin film of carbon that shows the outline of an organism?

A carbon film fossil is a thin layer of carbon residue preserved on a rock surface, capturing the outline or impression of an organism. These fossils form when the organic material of an organism decomposes, leaving behind a carbon residue that eventually hardens and becomes preserved in sedimentary rock. Carbon film fossils can provide valuable information about the shape and structure of ancient organisms.

Why is burning of fossils is a concern for scientists?

Burning fossil fuels releases greenhouse gases like carbon dioxide which contribute to global warming and climate change. This can lead to negative impacts on the environment, such as rising sea levels, extreme weather events, and loss of biodiversity. Scientists are concerned because these changes can disrupt ecosystems and have wide-ranging consequences for both nature and human society.

Why are most plant fossils carbon films?

Most plant fossils are carbon films because the organic material in the plant decays, leaving a thin carbon residue that is preserved in the rock. This carbon film provides a detailed imprint of the original plant, making it a valuable record for paleobotanists studying ancient plant species.