ammonite
ancient
animal
animals
archaeology
background
bivalve
brown
clam
close up
color
era
evolution
extinct
fossil
geological
geology
gray
history
image
invertebrate
jurassic
large
life
limestone
macro
mineral
mollusk
nature
object
old
paleontology
past
pattern
pecten
pectinidae
prehistoric
rock
rough
sandstone
scallop
science
sea
sedimentary
shell
single
skeleton
stone
textured
time