Browse Items (4 total)

Stratigraphic Range Carboniferous to Cretaceous Taxonomy Phylum: MolluscaClass: CephalopodaOrder: BelemnitidaSet 1:Group: CylindroteuthisSet 2:Group: unknown Distinctive Features Guard with radial calcite crystalsCrushed conical hole where…

Stratigraphic Range Carboniferous to Cretaceous Taxonomy Phylum: MolluscaClass: CephalopodaOrder: Belemnitida Distinctive Features Guard of radial calcite crystalsConical cavity where phragmocone used to be Preservation Aragonitic phragmocone…

Taxonomy Phylum: Mollusca Class: Cephalopoda Subclass: Ammonoidea Diagnostic features [See labelled diagram above] Aragonite shell Septa Suture (different for goniatites, ceratites and ammonites, see second diagram…

Species Ceratites Stratigraphic Range Triassic Taxonomy Phylum: MolluscaClass: CephalopodaSubclass: AmmonoideaOrder: Ceratitida Distinctive Features PlanispiralApertureBody chamberCeratitic suture linesEvolute Preservation Internal…