california academy of sciences geology:
Chelonia (?) californiensis
california academy of sciences geology:
Trace Fossil (Coprolite) From The California Academy of Sciences Geology Collection
california academy of sciences geology:
Trace Fossil (Coprolite) From The California Academy of Sciences Geology Collection
california academy of sciences geology:
Trace Fossil (Coprolite) From The California Academy of Sciences Geology Collection
california academy of sciences geology:
Uria lomvia