1) Cretaceous ammonite
Found on
https://www.crosswordclues.com/clue/barroisiceras
Barroisiceras is an acanthoceratacean ammonite from the Upper Cretaceous, Coniacian, included in the family Collignoniceratidae. ==Diagnosis== The shell of Barroisiceras is rather involute, coiled such that the outer whorl embraces much of the previous, and is generally compressed. Whorls are high with a strong crenulate keel and sparse umbilical ...
Found on
http://en.wikipedia.org/wiki/Barroisiceras
No exact match found.
