Baby Ammonoids, Baby Gastropods

Small ammonoids among small gastropods

A newly hatched Baculites ?

More small ammonoids and gastropods with a fish scale.

From the Cretaceous Mancos Shale, Scaphites whitfieldi Zone, the coiled ammonoids could be Scaphites whitfieldi or Prionocyclus novamexicanus.

See our paper: Daniel A. Stephen, Kevin G. Bylund, Patricia Garcia, R. Dawn McShinsky, Holley Jean Carter, 2012, Taphonomy of dense concentrations of juvenile ammonoids in the Upper Cretaceous Mancos Shale, east-central Utah, USA. Geobios 45(1):121-128. for updated information.