Douvilleiceras Douvilleiceratidae Sonneratia (ammonite) Double Arches Pit Capotes Formation List of the prehistoric life of Arkansas List of the Mesozoic life of Texas Riachuelo Formation List of the Mesozoic life of Arkansas List of the Mesozoic life of Alaska List of the prehistoric life of Alaska List of ammonite genera List of the Mesozoic life of California List of the prehistoric life of California List of the prehistoric life of Texas Hoplites (ammonite) List of fossiliferous stratigraphic units in Colombia