aged
ancestor
ancient
animal
antiques
artifact
biology
bone
bygone
cretaceous
danger
dangerous
dead
deceased
dino
dinosaur
discovery
education
fierce
fish
geology
herbivore
historical
history
jurassic
jurrasic
mineral
model
monster
nature
old
paleontology
predator
replica
replicate
rock
sand
science
shell
skeletal
skeleton
skull
spiky
stone
teeth
terrible
tyrannosaur