Neostlingoceras carcitanense Subzone: Difference between revisions

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'''Key Fauna''':   
'''Key Fauna''':   


Porifera:         ''Stauronema carteri''
{| Class="wikitable"
 
|Porifera: ||''Stauronema carteri''
Brachiopoda: ''Tropeothyris? carteri''
|-
 
| ||Brachiopoda:|| ''Tropeothyris? carteri''
Bivalvia:         ''Aucellina'' spp. (locally common)
|-
 
| ||Bivalvia:|| ''Aucellina'' spp. (locally common)
''Inoceramus anglicus''
|-
 
| || ||''Inoceramus anglicus''
Ammonoidea: ''Anisoceras'' spp.
|-
 
| ||Ammonoidea:||''Anisoceras'' spp.
''Idiohamites'' spp.
|-
 
| || ||''Idiohamites'' spp.
''Mantelliceras mantelli''
|-
 
| || ||''Mantelliceras mantelli''
''Neostlingoceras carcitanense''
|-
 
| || ||''Neostlingoceras carcitanense''
''Sciponoceras'' spp.       
|-
| || ||''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.
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.

Revision as of 15:36, 25 September 2013

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

Retrieved from "http://earthwise-staging.bgs.ac.uk/index.php?title=Neostlingoceras_carcitanense_Subzone&oldid=1392"