Unit 6 Lesson 1 Quiz

a piece that forms when minerals replace the plant material in a piece of wood

• petrified wood

• fossil

• trace fossil

• mold

when the last of a species has died out

• living fossil

• extinction

• trilobite

• cast

fossil formed when a hollow space is formed in mud

• cast

• petrified wood

• mold

• fossil

preserved remains or traces of a once living thing

• trace fossil

• cast

• fossil

• mold

common marine fossil from the Paleozoic Era

• paleontologist

• trace fossil

• fossil

• Trilobite

an organism that looks like it has not changed much over time

• extinction

• living fossil

• cast

• Trilobite

footprints preserved in rock

• fossil

• mold

• trace fossil

• cast

scientist who studies fossils

• cast

• fossil

• paleontologist

• Trilobite

model of an organism formed when sediment fills a mold and hardens

• mold

• fossil

• cast

• trace fossil