Ambatosaona: Early/Lower Callovian, Madagascar

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Macrocephalitidae
Pleurocephalites maevaranensis
Bivalvia - Pholadida - Ceratomyidae
Ceromya concentrica (Sowerby 1825)
Bivalvia - Ostreida - Palaeolophidae
Alectryonia gregarea (Sowerby 1816)
recombined as Actinostreon gregareum
Bivalvia - Pectinida - Limidae
Lima impressa
see common names

Coordinates: 15.7° South, 47.6° East (view map)
Paleocoordinates:24.1° South, 25.8° East
Basis of coordinate:estimated from map
Geographic resolution:small collection
Period:Jurassic Epoch:Middle Jurassic
Stage:Callovian 10 m.y. bin:Jurassic 5
Key time interval:Early/Lower Callovian
Age range of interval:164.70000 - 161.20000 m.y. ago
Stratigraphic resolution:bed
Stratigraphy comments: unit 2
Lithology and environment
Primary lithology:yellow lithified marl
Environment:marine indet.
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Database number:98120
Authorizer:W. Kiessling Enterer:U. Merkel
Research group:marine invertebrate
Created:2010-09-21 00:35:08 Last modified:2010-09-21 03:35:08
Access level:the public Released:2010-09-21 00:35:08
Creative Commons license:CC BY
Reference information

Primary reference:

8015.PGAP 1022H. Besairie and M. Collignon. 1972. Geologie de Madagascar I. Les Terrains Sedimentaires. Annales Geologiques de Madagascar 35:1-463 [A. Rees/A. Rees]