Yabeiceras is an extinct genus of cephalopod belonging to the ammonite family Collignoniceratidae. They flourished during the Coniacian age, and were global in extent. The species in the Yabeiceras genus include: ... Found on http://en.wikipedia.org/wiki/Yabeiceras
1) Cretaceous ammonite 
Yabeiceras is an extinct genus of cephalopod belonging to the ammonite family Collignoniceratidae. They flourished during the Coniacian age, and were global in extent. The species in the Yabeiceras genus include: ...