Mudstone, shale, and limestone are examples of sedimentary rock likely to contain fossils. As the layers of sediment build up on top of one another, they create a physical timeline. The oldest layers, ...

Fossil species that are used to distinguish one layer from another are called index fossils. Index fossils occur for a limited interval of time. Usually index fossils are fossil organisms that are ...

Fossils are physical evidence of prehistoric animals and plants. They tell us about the history of our planet, from climate and evolution to diets and diseases. There may be more to these prehistoric ...

NAGASAKI--Researchers have determined that a fossil found in the layers of a local beach is the shoulder blade of a 9-meter-long ornithopod dinosaur, one of the largest in Japan and possibly a new ...

That’s the fossil bit. All of these creatures and plants contain carbon, which gives off energy when it’s burned; that’s why they’re fuels. Both oil and gas come from layers of dead marine ...

The Role of Stratigraphy in Dating Fossils Stratigraphy involves studying rock layers (strata) to determine the relative ages of fossils. The principle of superposition indicates that lower layers ...

Coal, oil and gas are the three fossil fuels. They are all non-renewable ... Dead plants and animals, on land and in the sea, were buried under layers of earth and sand that slowly became ...