The image shown above is ammonoid mollusk fossil called Mortoniceras leonensis (T.A. Conrad, 1857). This animal fossil dates to the  Late...

  The image shown above is ammonoid mollusk fossil called  Acanthoscaphites nodosus  (Owen, 1852). This animal fossil dates to the  Late Maa...

  Above is an image of part of a seed fern frond plant fossil called  Neuropteris inflata  (Lesquereux). This plant fossil dates to the age ...