1) Cretaceous ammonite
Found on
https://www.crosswordclues.com/clue/berriasella
Berriasella is a discoidal evolute perisphinctacean ammonite, and type genus for the neocomitid subfamily Berriasellinae. Its ribbing is distinct, consisting of both simple and bifurcated ribs that extend from the umbilical seam across the venter; its whorl section generally compressed, the venter more or less narrowly rounded. Berriasella, named ...
Found on
http://en.wikipedia.org/wiki/Berriasella
No exact match found.
