Understanding geology is critical to studying paleontology because fossils ... Mudstone, shale, and limestone are examples of sedimentary rock likely to contain fossils. As the layers of sediment ...

Millions of years ago, our Solar System traveled through a densely populated galactic region and was exposed to increased ...

Menu Local Geology History, Resources ... The great number of fossils shows the nature of life in benthic communities in the Ordovician ocean. The layers of Ohio's bedrock are slightly tilted, with ...

The find could hold implications for understanding the origin of life here on Earth.

Menu Local Geology History, Resources ... that is. Our local limestone layers reflect times of relative prosperity for the wide variety of marine invertebrates living in a warm, shallow sea that ...

John Wesley Powell A professor of geology at Illinois Wesleyan, John Wesley Powell had more than just a passing interest in the layers upon layers of rocks exposed by the Colorado River.