Mahatsinjo (Jurassic of Madagascar)

Where: Madagascar (16.8° S, 46.0° E: paleocoordinates 24.1° S, 23.8° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Early/Lower Callovian (164.7 - 161.2 Ma)

• unit 1, 10 m thick

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified marl and lithified limestone

• grey marls with limestone banks

Size class: macrofossils

Primary reference: H. Besairie and M. Collignon. 1972. Geologie de Madagascar I. Les Terrains Sedimentaires. Annales Geologiques de Madagascar 35:1-463 [A. Rees/A. Rees]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98153: authorized by Wolfgang Kiessling, entered by Uta Merkel on 22.09.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Rhynchonellida - Cyclothyrididae
"Rhynchonella pseudoinconstans" = Torquirhynchia pseudoinconstans
"Rhynchonella pseudoinconstans" = Torquirhynchia pseudoinconstans Kitchin 1900
Bivalvia
 Arcida - Parallelodontidae
 Ostreida - Palaeolophidae
"Alectryonia gregarea" = Actinostreon gregareum, "Lopha marshii" = Actinostreon marshi
"Alectryonia gregarea" = Actinostreon gregareum Sowerby 1816 oyster
"Lopha marshii" = Actinostreon marshi Sowerby 1814 oyster
 Pholadida - Ceratomyidae
"Ceromya sarthacensis" = Ceratomya
"Ceromya sarthacensis" = Ceratomya clam
Cephalopoda
 Ammonitida - Lytoceratidae
Thysanolytoceras adeloides Kudernatsch 1852 ammonite
 Ammonitida - Macrocephalitidae
 Ammonitida - Perisphinctidae
"Choffatia cf. baluchistanensis" = Choffatia, "Grossouvria cf. rjasanensis" = Choffatia, "Grossouvria cf. bucharica" = Choffatia, "Grossouvria crassa" = Choffatia
"Choffatia cf. baluchistanensis" = Choffatia ammonite
"Grossouvria cf. rjasanensis" = Choffatia ammonite
"Grossouvria cf. bucharica" = Choffatia ammonite
"Grossouvria crassa" = Choffatia ammonite
 Phylloceratida - Phylloceratidae
 Ammonoidea -