Science Fossils Mrs Johnson

Hollow area in the sediment which shows the shape of an organism or a part of an organism

films extremely thin coating on rock

Divided periods characterized by differences in life forms

Fossils in which minerals replace all or part of an organism

Paleozoic Era was dominated by plants

Cenozoic Era started when the _____ startes

Break in Earth’s crust which is always younger than the rock it cuts through

Age compared with ages of other rocks

Mesozoic Era started when the _____ started

Coral and Crinoid are index fossils

Mesozoic era was dominated by plants

The geological time scale are divided to these

Paleozoic Era started when the ______ started

Fossils are preserved remains or traces of living things and are formed when living things die & are buried by sediments

The fossil record provides evidence to support the theory of...

Paleontologist

Index fossils

Some processes become trapped in tar, ice, and pine

Provide evidence of the activities of ancient organism is trace fossil

Marked by significant worldwide changes in types of fossils present in rock

Which is not an era

Cenozoic was dominated by small mammals and birds

Longest subdivisions; based on abundance of fossils

The Precambrian Time covers how much of Earth’s history

Lava the hardens on the surface

Fossil Record provides evidence for the following except

Law of Superpostion- in vertical sedimentary rock layers the oldest layer is at the bottom, higher layers are younger

Which is divided into 2 periods

Earliest form of life was cyborbacteria

Do geologist use radioactive decay to determine the absolute ages of rocks

solid copy of the shape of an organism

Based on types of existing life globally at a particular time