Mantelliceras mantelli Zone: Difference between revisions

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'''Key Fauna''':
'''Key Fauna''':
{| class=Wikitable
{| class=Wikitable
| Porifera: || ''Stauronema carteri''
| Porifera: || ''Stauronema carteri''
Line 32: Line 31:
| ||''Sharpeiceras'' spp.
| ||''Sharpeiceras'' spp.
|}
|}




'''Faunal abundance & preservation''': Typically rich and phosphatised fauna near base of zone.
'''Faunal abundance & preservation''': Typically rich and phosphatised fauna near base of zone.


'''Bio-markers''': (see under subzones)
'''Bio-markers''': (see under subzones)


'''Subzones''':
''Mantelliceras saxbii''


''Sharpeiceras schlueteri''


'''Subzones''':      ''Mantelliceras saxbii''
''Neostlingoceras carcitanense''
 
 
 
                        ''Sharpeiceras schlueteri''
 
 
 
                        ''Neostlingoceras carcitanense''
 
 
 
'''Age''':                Early Cenomanian
 
 
 
 
 
 
>        faunal summary of ''M. mantelli'' Zone
 
 
 
>    standard macrofossil zonation and correlation of the UK Chalk Group
 
 


>        back
'''Age''':
Early Cenomanian






[[category: Standard zonation]]
[[category: Standard zonation | 001]]

Latest revision as of 16:09, 25 September 2013

Base: Base of the zone is mostly coincident with the base of the Chalk Group, except where earliest Cenomanian deposits comprise glauconitic sandstones (eg. locally in South-east Devon), where it is within the highest part of the Upper Greensand Formation.

Top: The top of the zone is immediately below the first appearance of Mantelliceras dixoni (Gale, 1995).

Range of Index species: Common in nominate zone, rare in overlying M. dixoni Zone (Wright & Kennedy, 1984).

Key Fauna:

Porifera: Stauronema carteri
Brachiopoda: Tropeothyris? carteri
Bivalvia: Aucellina spp.
Inoceramus anglicus
I. crippsi (locally abundant)
Ammonoidea: Hyphoplites spp.
Hypoturrilites gravesianus
Mantelliceras spp. (except M. dixoni)
Mariella spp.
Neostlingoceras carcitanense
Schloenbachia spp. (locally abundant)
Sharpeiceras spp.


Faunal abundance & preservation: Typically rich and phosphatised fauna near base of zone.

Bio-markers: (see under subzones)

Subzones: Mantelliceras saxbii

Sharpeiceras schlueteri

Neostlingoceras carcitanense

Age: Early Cenomanian

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