ammonite

ancient

animal

archeology

arthropod

breeze

covered

dactylioceras

discovery

evolution

excavation

exoskeleton

extinct

extinction

fossil

fossilization

fossilized

geological

geology

history

impression

invertebrate

jurassic

jurrasic

marine

mineral

minerals

natural

nature

old

paleontology

pattern

prehistoric

preserved

reveal

revealing

rock

sand

science

sea

sedimentary

shell

skeleton

spiral

stone

texture

textured

uncover

uncovering

wind