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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 did ancient organisms become fossil fuels?

Ancient organisms became fossil fuels through a process called diagenesis, where organic matter from dead plant and animal remains is buried and subjected to high pressure and temperature over millions of years. This transforms the organic material into hydrocarbons, such as coal, oil, and natural gas, which are the substances we extract and use as fossil fuels.

What is a Bea tar pits?

The Brea Tar Pits are where Ice Age animals were stuck in the tar pits such as the mammoth. You can still see them today.

Which features of a dinosaur fossil indicate that it have feathers?

Usually, you can only tell conclusively that a dinosaur had feathers if there are feather imprints with the dinosaur fossil. One exception is that fused bones at the end of the tail may suggest that the tail was meant to support long feathers, in which case the bones can suggest that there were feathers. Another example is if the bones of the forearm have attachment points for a bunch of ligaments other than the ligaments at the joints, the ligaments probably provided attachment points for feathers.

What could explain this distribution of mesosaurus fossils?

Old answer: the scientists found them in the 2 regions and

Mesosaurus was significant in providing evidence for the theory of continental drift, because its remains were found in southern Africa and eastern South America, two far away places. As Mesosaurus was a small freshwater organism, and therefore could not have crossed the Atlantic Ocean, this distribution indicated that Africa and South America used to be joined together. Indeed, all the world's continents were joined into one supercontinent called Pangaea in the time Mesosaurus existed.

Where can you find the youngest fossils?

You can find the youngest layer in the top layer because in the bottom layer, all you see is bones from the 200 B.C or from the dinosaur time.

Why are fossil rare in conglomerates?

Animals need to be buried under certain conditions in order to fossilize -- rapid burial in a material that shuts out oxygen and predators isd best, which is why mudstones preserve the best fossils. Conglomerates start life as a mass of shingle or pebbles which is later compacted and cemented by the percolation of water. Any animal that died under these conditions would quickly decompose. However, you can find "reworked" fossils in conglometates. These are animals that died millions of years earlier, then the rocks in which they were fossilized brojke away (through erosion) and became part of a conglomerate.

The oldest vertebrate fossils are those of?

Fish. Not the fish you're used to though. They'd be jawless and sometimes covered in bony armor plates.

Where do you find Obsidian?

ANSWER:Anywhere that a volcano has been active sometime in history. Its black glass fromed by the cooling of lava and has been used as surgical scapels since recorded history.

How do you determine the age of an Ithaca firearm?

Remove the forearm stock by pulling from the front down(It pulls hard). On the underside of the forearm stock is your serial number. Go to; Diamond Gun Smithing on the internet and look up your serial number. If you find models; click on each model until your serial nuber appears. Example; Serial number 263xxx=Flues model and made in 1915. Good luck and keep that really super shotgun

What should people expect to gain from the Atlanta Urban League?

There are many things such as "Golf" or "Education" that are named "Atlanta Urban League." Please specify exactly what you want to know. Thanks Marcy

If the same types of fossils are found in two separate rock layers it's likely that the two rock layers form what?

If the same types of fossils are found in two separate rock layers, it is likely that the two rock layers are part of one continuous deposit.

Do scientists find any fossilized dinosaur skin?

Yes, fossilized dinosaur skin has been found. In fact it can be seen in the Museum of Science in Boston, or at least could be when I was last there about twenty years ago (I moved out of the area). My recollection of what I saw was a large ossified part, perhaps over half, of a small dinosaur about twice the size of a cow. It looked like it might have frozen, been half thawed out, with the thawed half rotting away, and then been covered and turned to stone. At any rate about half of it was sort of intact, and the fossilized skin on it could clearly be seen.

Of course, whether anything at all, but a few stray atoms, of the original skin was still there is another question. In a case like this, my expectation is that whatever covered it probably became a matrix for its form, which remained as the original organic matter decomposed completely, leaving nothing but the solid parts like bones. Then, the ossification took place, filling the void with minerals. I don't know this happened, but it would be my expectation.

Most fossils of animal parts are bones or shells. There are a few fossils of soft tissue. It is common to find fossils of clam shells, but rare to find the clams. Clearly this is because the clams decomposed and the shells did not.

But a fossil is not even necessarily the remains of an animal or plant. It can be a dinosaur footprint, the track left by a snake, or a filled in hole dug by an insect. These kinds of fossils exist for dinosaur skin also - impressions left by the skin on mud or clay that was covered and ossified, retaining the shape of the skin.

Fossils are most often mineralized, but sometimes they are not. Amber is an example of a common fossil that is not mineralized, and it often contains insects or pollen that are pretty much made up of the original organic matter. And, even when mineralized, sometimes sufficient traces of original material remain to be instructive. I have seen fossilized feathers that were completely mineralized, but retained some of the feather's original pigmentation, so it was possible to see where stripes were on the feather. I have no idea that the dinosaur skin I saw had a color anything like what the original color was. Even if pigment remained, certainly some pigment would have disappeared, leaving an impression of color that might be about as accurate as the idea of the color of a maple leaf in summer derived from fall colors.

Where have fossils records been found during your period?

Fossil records have been found in various locations around the world, including well-known sites such as the Burgess Shale in Canada, the La Brea Tar Pits in California, and the Gobi Desert in Mongolia. These sites provide vital insights into different geological periods, showcasing a diverse array of species from ancient marine life to terrestrial dinosaurs. Additionally, advancements in technology have allowed for the discovery of fossils in previously inaccessible areas, including polar regions and deep-sea environments. These findings continue to enhance our understanding of evolutionary history and past ecosystems.

What three main rock has has fossil?

The three main types of rock that can contain fossils are sedimentary, igneous, and metamorphic rocks. However, fossils are primarily found in sedimentary rocks, as they form from the accumulation of sediment and organic material, allowing for the preservation of plant and animal remains. Igneous rocks typically form from cooled magma or lava and rarely contain fossils due to the high temperatures involved in their formation. Metamorphic rocks, which are formed under heat and pressure, generally do not preserve fossils either.

How does fossil change our environment changed over time?

Fossil fuels, such as coal, oil, and natural gas, have significantly altered our environment since their widespread use began during the Industrial Revolution. Initially, they fueled rapid industrial growth and urbanization, leading to economic advancements but also increased greenhouse gas emissions and air pollution. Over time, the accumulation of these emissions has contributed to climate change, resulting in rising global temperatures, extreme weather events, and biodiversity loss. In response, there is a growing shift towards renewable energy sources to mitigate these environmental impacts.

What do you call scientes who hunt for human fossils?

Scientists who hunt for human fossils are typically referred to as paleoanthropologists. They study the origins and development of early humans through the excavation and analysis of ancient remains and artifacts. Their work often involves collaboration with other fields such as archaeology and genetics to better understand human evolution.

What were the earliest vertebrae water dwelling fossils?

The earliest vertebrate fossils found in aquatic environments date back to the Cambrian period, approximately 500 million years ago. Notable examples include the jawless fish known as Agnatha, with one of the oldest genera being Myllokunmingia. These early vertebrates exhibited primitive features and laid the groundwork for the evolution of more complex fish and terrestrial vertebrates. Fossils from this era provide crucial insights into the transition from invertebrates to early vertebrates in the evolutionary timeline.

When humans burn fossil fuels called?

When humans burn fossil fuels, the process is called combustion. This chemical reaction releases energy in the form of heat and light, producing carbon dioxide, water vapor, and other pollutants as byproducts. Combustion of fossil fuels is a major source of greenhouse gas emissions, contributing to climate change and air pollution.

What statements best describe the formation of fossils?

Fossils form primarily through the process of sedimentation, where organic remains are buried under layers of sediment, which gradually harden into rock. Over time, minerals from groundwater seep into the remains, replacing organic material and preserving the shape of the organism. Conditions such as rapid burial and low oxygen levels help prevent decay, increasing the likelihood of fossilization. Factors like the type of organism, environmental conditions, and geological processes also influence the formation and preservation of fossils.