石化した
age
ancestor
ancient
biology
bone
copy
embedded
enclosed
era
extinct
fish
fossil
fossilization
fossilized
geology
history
imprint
jurassic
leptolepis brasiliensis
limestone
marine
mineral
neolithic
old
paleolithic
paleontology
petrifaction
prehistoric
prehistory
rock
sandstone
science
sea
sedimentary
skeleton
space
stone
texture