Amboromihanto II: Early Callovian, Madagascar
collected by M. Collignon 1953

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Phylloceratida - Phylloceratidae
Holcophylloceras indicum (Lemoine 1910)
Calliphylloceras disputabile (Zittel 1869)
Phylloceras cf. kudernatschi (Hauer 1854)
Ptychophylloceras euphyllum (Neumayr 1871)
Adabofoloceras subobtusum (Kudernatsch 1852)
see common names

Geography
Country:Madagascar State/province:Boeny County:Soalala
Coordinates: 16.6° South, 45.6° East (view map)
Paleocoordinates:23.8° South, 23.5° East
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Jurassic Epoch: Middle Jurassic
Stage: Callovian 10 m.y. bin: Jurassic 5
Key time interval: Early Callovian Ammonoid zone:  Macrocephalites triangularis
Age range of interval: 165.3 - 161.5 m.y. ago
Stratigraphy
Stratigraphic resolution:bed
Lithology and environment
Primary lithology:brown lithified marl
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:good
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collectors:M. Collignon Collection dates:1953
Metadata
Also known as:Collignon gisement 54
Database number:234097
Authorizer:P. Scofield Enterer:P. Scofield
Modifier:P. Scofield Research group:marine invertebrate
Created:2024-03-16 20:49:51 Last modified:2024-03-16 20:51:46
Access level:the public Released:2024-03-16 20:49:51
Creative Commons license:CC BY
Reference information

Primary reference:
87904. B. Joly. 1976. Les Phylloceratidae malgaches au Jurassique. Généralités sur les Phylloceratidae et quelques Juraphyllitidae. Travaux et Documents des Laboratoires de Géologie de Lyon Année 67:1-59 [P. Scofield/P. Scofield]