“Alligaticeras Alligaticeras is an extinct genus of cephalopod belonging to the Ammonite...Alligaticeras
“Adnethiceras Adnethiceras is an extinct genus of ammonite. External links Adnethiceras at the...Adnethiceras
“Petitclercia Petitclercia is a genus of extinct mollusk from the strigoceratid subfamily...Petitclercia
“Acrimeroceras Acrimeroceras is one of three genera included in the goniatitid subfamily...Acrimeroceras
“Acrioceras Acrioceras is an extinct genus of cephalopod belonging to the Ammonite subclass. This...Acrioceras
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