Neocomites (Neocomites) premolicus Sayn, 1901

Remarks

• Collector:    Emmanuel Pénagé

• Formation:  Very Early Valanginian rocks

• Location:     southeastern France

• This pyritic specimen was cleaned of oxidation/corrosion with mercaptoacetic acid.

General Info

Synonyms (older names and misidentifications in the literature)

• 1840 Ammonites neocomiensis d'Orbigny

• 1882 Ammonites neocomiensis d'Orbigny; Mallada

• 1891 Hoplites neocomiensis (d'Orbigny); Lory

• 1897 Hoplites neocomiensis (d'Orbigny); Sarasin

• 1901 Hoplites neocomiensis (d'Orbigny); Uhlig

• 1901 Neocomites neocomiensis var. premolica Sayn

• 2003 Neocomites (Neocomites) premolicus Sayn; Wippich

Stratigraphic Occurrence

• Earliest Valanginian rocks of France
• Earliest Valanginian rocks of Morocco

Age

• Neocomites (Neocomites) premolicus Sayn occurs in the Tirnovella pertransiens zone, Earliest Valanginian Stage (~136 mya).

Geographic Occurrence (not an all-inclusive list)

• France
• Morocco

Remarks   

       For identification, descriptions and ranges, see:

• Sayn, G.  1901.  Les Ammonites Pyriteuses des Marnes Valangiennes du Sud-Est de la France.  Mémoires de la Société Géologique de France, Paleontologie, Mémoire 23, 30-31; plate 3, fig's 7 and 8.

• Wippich, M. G. E.  2003.  Valanginian (Early Cretaceous) Ammonite Faunas from the Western High Atlas, Morocco, and the Recognition of Western Mediterranean 'Standard' Zones.  Cretaceous Research 24, 357-374; fig. 5.