Browse Items (7 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: Coleoidea Cohort: Belemnoidea Diagnostic Features Diagram with labelled features of belemnites 'Bullet' shape Phragmocone: chambers divided by aragonitic septa (often preserved as conical…

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 Deshayesites Stratigraphic Range Cretaceous Taxonomy Phylum: MolluscaClass: CephalopodaSubclass: AmmonoideaOrder: Ammonitida Distinctive Features PlanispiralAmmonitic suture patternEvoluteRibsAperture Preservation Internal mould,…

Species Anahoplites splendens Stratigraphic Range Cretaceous Taxonomy Phylum: MolluscaClass: CephalopodaSubclass: AmmonoideaOrder: Ammonitida Distinctive Features PlanispiralInvoluteAmmonitic suture patternRibs Preservation Internal mould,…

Species Scaphites Stratigraphic Range Cretaceous Taxonomy Phylum: MolluscaClass: CephalopodaSubclass: AmmonoideaOrder: Ammonitida Distinctive Features 'g' shaped coiled shellRibsInvoluteAmmonitic suture lines Preservation Internal…