aged
ammonite
ancestor
ancient
archaeology
biology
bone
bygone
carbon
creation
dead
dinosaur
eolith
evolution
evolve
extinct
extinction
footprint
forefather
fossil
fossilized remains
genesis
geology
impression
jurassic
museum
nature
neolith
neolithic
paleolith
paleolithic
paleontology
past
petrified remains
prehistoric creature
prehistory
preserved
relic
remnant
research
rock
science
skeleton
specimen
stone
stone age