Ankirihitra, unit 1b (Jurassic of Madagascar)

Where: Madagascar (16.8° S, 46.5° E: paleocoordinates 24.4° S, 24.2° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• Macrocephalites chariensis and Nothocephalites semilaevis zone

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified limestone and lithified, argillaceous limestone

• limestones and marly limestones with thin intercalations of 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 98129: authorized by Wolfgang Kiessling, entered by Uta Merkel on 21.09.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Terebratulida - Postepithyrididae
"Terebratula aurata" = Kutchithyris propinqua, "Terebratula acutiplicata" = Kutchithyris acutiplicata
"Terebratula aurata" = Kutchithyris propinqua Kitchin 1900
"Terebratula acutiplicata" = Kutchithyris acutiplicata Kitchin 1900
 Rhynchonellida - Erymnariidae
"Rhynchonella rugosa" = Cryptorhynchia rugosa
"Rhynchonella rugosa" = Cryptorhynchia rugosa Kitchin 1900
Bivalvia
 Nuculida - Nuculidae
 Megalodontida - Ceratomyopsidae
"Ceromyopsis aff. sarthacensis" = Ceratomyopsis
"Ceromyopsis aff. sarthacensis" = Ceratomyopsis clam
 Ostreida - Palaeolophidae
"Alectryonia gregarea" = Actinostreon gregareum
"Alectryonia gregarea" = Actinostreon gregareum Sowerby 1816 oyster
 Ostreida - Ostreidae
 Ostreida - Eligmidae
Eligmus rollandi Douvillé 1907 oyster
 Ostreida - Gryphaeidae
 Pectinida - Plicatulidae
Cephalopoda
 Phylloceratida - Phylloceratidae
Holcophylloceras mediterraneum Neumayr 1871 ammonite
Calliphylloceras disputabile Zittel 1869 ammonite
Ptychophylloceras flabellatum Neumayr 1871 ammonite
 Ammonitida - Oppeliidae
 Ammonitida - Macrocephalitidae
 Nautilida - Paracenoceratidae
 Belemnitida - Mesohibolitidae
"Belemnopsis calloviensis" = Pachybelemnopsis canaliculatus
"Belemnopsis calloviensis" = Pachybelemnopsis canaliculatus Schlotheim 1820 belemnite