
1) Cretaceous ammonite
Found on
https://www.crosswordclues.com/clue/calycoceras

Calycoceras is an extinct cephalopod genus belonging to the subclass Ammonoidea and family Acanthoceratidae that lived during the Cenomanian stage of the Late Cretaceous, 100-94 Mya. Their shells had ornate ribs. Cretaceous of Angola, Antarctica, Canada (British Columbia), France, Germany, Japan, Nigeria, Oman, Russia, the United Kingdom, United S...
Found on
http://en.wikipedia.org/wiki/Calycoceras
No exact match found.