Neostlingoceras carcitanense Subzone

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Base: The base of the subzone is the base of the M. mantelli Zone.


Top: The top of the zone occurs in the interval immediately below the occurrence of common specimens of the ammonite Sharpeiceras spp. (Gale & Friedrich, 1989; Gale, 1995).


Range of index species: Occurs in nominate subzone, and rare or absent in S. schlueteri Subzone (Gale & Friedrich, 1989).


Key Fauna:


Porifera: Stauronema carteri 


                       Brachiopoda:  Tropeothyris? carteri



                       Bivalvia:         Aucellina spp. (locally common)



                                               Inoceramus anglicus



                       Ammonoidea: Anisoceras spp.


Idiohamites spp.


Mantelliceras mantelli


Neostlingoceras carcitanense


Sciponoceras spp.




The occurrence of heteromorph ammonites (eg. Anisoceras spp., Idiohamites spp., Neostlingoceras spp. & Sciponoceras spp.) and the bivalve Aucellina is particulary characteristic of the N. carcitanense Subzone.


Faunal abundance & preservation: Typically a low diversity, phosphatised fauna.


Bio-Markers: The bivalve Aucellina is common.


Age: Earliest Cenomanian

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