ammonite

ammonoidea

ancient

animal

archaeological

archeology

background

cephalopod

circles

circular

closeup

detail

evolution

extinct

fossil

fossilization

fossilized

geological

geologist

geology

history

macro

marine

mesozoic

mineral

mollusc

mollusk

mountain

museum

natural

nature

ocean

old

organism

paleontology

paleozoic

prehistoric

prehistory

relic

rock

science

sea

shell

skeleton

spiral

stone

swirl

texture

timeline