GAULT AMMONOIDEA
Oxytropidoceras (Oxytropidoceras) roissyanum (d'Orbigny 1841)
two fragmentary examples of this rare ammonite from the Lower Gault (Hoplites spathi Subzone) of Folkestone, Kent, UK
Only a portion of the keel is preserved.
Catalogue No: SQ/A/0170/JKC
Site: Folkestone, KENT, UK
Family: BRANCOCERATIDAE Spath, 1934 (1900)
Subfamily: MOJSISOVICZIINAE Hyatt, 1903
Genus: Oxytropidoceras STEILER, 1920
Subgenus: Oxytropidoceras (Oxytropidoceras)
Species: Oxytropidoceras (Oxytropidoceras) roissyanum, (d'Orbigny, 1841)
Measurement: Diameter 70mm
Albian Stage: Middle Albian
Bed & Position: Bed I - Hoplites dentatus Zone; Hoplites spathi Subzone (main "dentatus nodule bed"
Preservation: Phosphatised
References:

a. Wright C. W. 1996. Treatise on Invertebrate Paleontology (Part L Mollusca 4 Revised) Volume 4: Cretaceous Ammonoidea

b. Spath L. F. 1929. A Monograph of the Ammonoidea of the Gault; Part VIII. Palaeontographical Society London

Keel is not preserved
Catalogue No: SQ/A/0171/JKC
Site: Folkestone, KENT, UK
Family: BRANCOCERATIDAE Spath, 1934 (1900)
Subfamily: MOJSISOVICZIINAE Hyatt, 1903
Genus: Oxytropidoceras STEILER, 1920
Subgenus: Oxytropidoceras (Oxytropidoceras)
Species: Oxytropidoceras (Oxytropidoceras) roissyanum, (d'Orbigny, 1841)
Measurement: Diameter 60mm
Albian Stage: Middle Albian
Bed & Position: Bed I - Hoplites dentatus Zone; Hoplites spathi Subzone (main "dentatus nodule bed"
Preservation: Phosphatised
References:

a. Wright C. W. 1996. Treatise on Invertebrate Paleontology (Part L Mollusca 4 Revised) Volume 4: Cretaceous Ammonoidea

b. Spath L. F. 1929. A Monograph of the Ammonoidea of the Gault; Part VIII. Palaeontographical Society London

 

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