Beraketa (Jurassic of Madagascar)

Where: Madagascar (23.1° S, 44.4° E: paleocoordinates 28.4° S, 18.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone and lithified sandstone

• marly and calcareous sandstones, marly limestones

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 98184: authorized by Wolfgang Kiessling, entered by Uta Merkel on 23.09.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Bivalvia
 Pholadida - Ceratomyidae
"Ceromya sarthacensis" = Ceratomya, Ceromya concentrica
"Ceromya sarthacensis" = Ceratomya clam
Ceromya concentrica Sowerby 1825 clam
 Pholadomyida - Pholadomyidae
Cephalopoda
 Ammonitida - Macrocephalitidae
 Ammonitida - Perisphinctidae
"Subgrossouvria biroi" = Choffatia, "Grossouvria evexa" = Choffatia
"Subgrossouvria biroi" = Choffatia ammonite
"Grossouvria evexa" = Choffatia ammonite
 Phylloceratida - Phylloceratidae
 Ammonoidea -
 Nautilida - Paracenoceratidae
Paracenoceras kumagunense Waagen 1873 nautiloid
Echinoidea
 Irregularia - Clypeidae
Mepygurus depressus Agassiz 1847 sea urchin
Anthozoa
 Scleractinia - Montlivaltiidae
Montlivaltia cottreaui Collignon 1932 stony coral