Browse Items (8 total)

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

Species Parkinsonia parkinsonia Stratigraphic Range Jurassic Taxonomy Phylum: MolluscaClass: CephalopodaSubclass: AmmonoideaOrder: Ammonitida Distinctive Features PlanispiralEvoluteRibsAmmonitic suture lines Preservation Calcite has replaced…

Species Amoeboceras alternans Stratigraphic Range Jurassic Taxonomy Phylum: MolluscaClass: CephalopodaSubclass: AmmonoideaOrder: Ammonitida Distinctive Features PlanispiralAmmonitic suture lines visible on some mouldsRibs Preservation Most…

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…

Hand Specimen Buff coloured rock.Almost pure quartz, which has been very well recrystallised.Faint banding could be original bedding. Thin-section Fine to medium grained recrystallised quartz with sutured contacts. Rock History The sutured…

Hand Specimen Almost entirely made up of fine sand sized quartz grains. Does not fizz with acid, so no carbonate present. Clean white rock, apart from pink-brown weathering. Dark carbonaceous marks are plant roots. Thin-section Subangular…