Malakialina, unit 5 (Jurassic of Madagascar)

Where: Madagascar (16.7° S, 46.6° E: paleocoordinates 24.4° S, 24.3° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Middle Callovian (164.7 - 161.2 Ma)

• unit 5, 30 m thick

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified marl

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 98127: authorized by Wolfgang Kiessling, entered by Uta Merkel on 21.09.2010, edited by Wolfgang Kiessling

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Rhynchonellida - Rhynchonellidae
 Rhynchonellida - Tetrarhynchiidae
"Rhynchonella fornix" = Kallirhynchia fornix, "Rhynchonella indica" = Kutchirhynchia indica
"Rhynchonella fornix" = Kallirhynchia fornix Kitchin 1900
"Rhynchonella indica" = Kutchirhynchia indica d'Orbigny 1847
 Terebratulida - Postepithyrididae
"Terebratula dhosaensis" = Kutchithyris dhosaensis
"Terebratula dhosaensis" = Kutchithyris dhosaensis Kitchin 1900
Bivalvia
 Nuculida - Nuculidae
Palaeonucula cuneiformis Sowerby 1840 nut clam
 Ostreida - Palaeolophidae
"Alectryonia gregarea" = Actinostreon gregareum
"Alectryonia gregarea" = Actinostreon gregareum Sowerby 1816 oyster
Cephalopoda
 Ammonitida - Aspidoceratidae
 Ammonitida - Reineckeiidae
Reineckeia anceps Reinecke 1818 ammonite
Reineckeia delarochei Collignon 1958 ammonite
 Ammonitida - Perisphinctidae
"Grossouvria rjasanensis" = Choffatia, Obtusicostites bukmani, "Obtusicostites obtusicosta" = Obtusicostites obtusicosta, "Obtusicostites ushas" = Obtusicostites obtusicosta, Hubertoceras ranaivoi, Kinkeliniceras kinkelini
"Grossouvria rjasanensis" = Choffatia ammonite
"Obtusicostites obtusicosta" = Obtusicostites obtusicosta Waagen 1875 ammonite
"Obtusicostites ushas" = Obtusicostites obtusicosta Waagen 1875 ammonite
Hubertoceras ranaivoi Collignon 1958 ammonite
Kinkeliniceras kinkelini Dacque 1910 ammonite
 Ammonitida - Oecoptychiidae
 Ammonitida - Oppeliidae
"Bonarellia fornix" = Chanasia fornix Sowerby 1840 ammonite