英文關鍵字
aged
ammonite
ammonitida
analyzing
ancient
animal
anthropology
antique
archaeologist
archaeology
archeologist
archeology
background
biology
digging
discovery
earth
epoch
era
evolution
expose
flask
fossil
geologic
geological
geology
historic
history
job
mineral
natural
old
outcrop
pattern
person
pick
science
scientist
seashell
shell
soil
stone
stones
surface
swirl
time
tube
uncover
worker