fossiliferous |
coquina |
As an adjective fossiliferous
is containing fossils.
As a noun coquina is
any of several small marine clams, of the species , common in us coastal waters.
fossiliferous |
unfossiliferous |
As adjectives the difference between fossiliferous and unfossiliferous
is that
fossiliferous is containing fossils while
unfossiliferous is not fossiliferous.