What does it mean if fossils are found in the same layer?

What does it mean if fossils are found in the same layer?

In every case as scientists investigate the fossils remaining in the rock layers they learn what life was like millions of years ago. The layers are stacked one upon the other and in general the lower layers are more ancient in time and the upper layers are more recent in geological time.

What can we infer about fossils found in the same layer of rock?

When we find the same kinds of fossils in rocks from different places, we know that the rocks are the same age. Scientists look for ancestors and descendants through geologic time.

Are there dinosaur fossils in the Grand Canyon Why or why not?

What about dinosaur fossils? Not at Grand Canyon! The rocks of the canyon are older than the oldest known dinosaurs. To see dinosaur fossils, the Triassic-aged Chinle Formation on the Navajo Reservation and at Petrified Forest National Park is the nearest place to go.

What is the most logical conclusion about a layer of rock near the top of a canyon?

Q. What is the most logical conclusion about a layer of rock near the top of a canyon? The layers near the top are older than layers below.

How can you use fossils and geologic features to interpret the relative ages of rock layers?

Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.

Did dinosaurs see the Grand Canyon?

While the dinosaurs might have missed out on seeing the Grand Canyon, lots of other fossils have been found that suggest other creatures frequented the location.

What are two observations a scientist could make by studying and testing fossils?

Scientists can put together how the plant or animal looked based on its skeletal structure, discover what the animals ate, and where they lived and how they died.

Why is it important to be able to date rock outcrops and fossils?

Dating of the fossils contributes to a clearer timeline of evolutionary history. Older methods of dating were more subjective, often an educated hypothesis based on the evidence available.

Are there any fossils of humans alongside the dinosaurs?

Although no human skeletons have been found fossilized alongside the dinosaurs, many “modern” animals (which evolutionists had thought to have evolved millions of years later) have been found buried in the same rock layer with the dinosaurs.

Can a fossil species be found in the same rock layer?

C)the majority of Eath’s surface was no longer under water. D)the continents as we know them today were joined together. A fossil species is found in the same rock layer with Fossil 3 and Fossil 4. When could this species have existed?

Which is the oldest fossil to have feathers?

We can see fossils of many other reptiles in rock of the same age and even older, but Archaeopteryx lithographica is the oldest known fossil to have feathers. We conclude that this animal is a link between reptiles and birds and that birds are descended from reptiles.

What kind of animals are found in Dinosaur Rock?

“Modern” Fossils with Dinosaurs. It seems that the dinosaur rock layers contain fossils remains of a distinct ancient biome, a swampy ecosystems. Relatively few mammals thrive in such an environment today–small rodents, arboreal animals (like a shrew, squirrel or possum), and swimming weasels and beavers are examples.