ONE WAY to find out more information about dinosaurs is to discover more dinosaur fossils. The type of rocks in which dinosaur fossils (and almost all other fossils) are found is called sedimentary rock. Sedimentary rock generally occurs as flat layers called strata (single layers called stratum).

What is a rock layer with lots of skeletons called?

Fossil layers are fossils that formed in sedimentary rock. Sedimentary rock is rock that is formed in layers by the depositing and pressing of sediments on top of each other. Because sediments sometimes include once-living organisms, sedimentary rock often contains a lot of fossils.

What layer do you find fossils?

sedimentary rock First: Fossils are created over time. Fossils are found in layers of sedimentary rock. Sedimentary rocks are formed from layers of sand, silt, dead plants, and animal skeletons. Over millions of years, the plants and animals become fossils, preserving a record of that time.

Where are the oldest fossils found in rock layers?

When a geologist studies 3 rock layers (and their fossils) there is the good chancce that the upper layer is the youngest and the lowest layer is the oldest.

What do fossils in rock layers tell us?

The location of fossils in rock layers provides evidence of Earths past landscapes. It is hard to guess the age of rock. Scientists have to act like detectives, piecing together a mystery to determine how long ago rocks formed. Fossils found in a particular rock layer help scientists determine the age of the rock.

Are fossils just rock?

Fossils are the preserved remains, or traces of remains, of ancient organisms. Fossils are not the remains of the organism itself! They are rocks. Bones, shells, feathers, and leaves can all become fossils.