Ankirihitra, unit 1c (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)

• Pseudoclydoniceras besairiei 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 98130: authorized by Wolfgang Kiessling, entered by Uta Merkel on 21.09.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Rhynchonellida - Erymnariidae
"Rhynchonella rugosa" = Cryptorhynchia rugosa
"Rhynchonella rugosa" = Cryptorhynchia rugosa Kitchin 1900
Cephalopoda
 Ammonitida - Oppeliidae
"Sublunuloceras aff. nodososulcatum" = Hecticoceras (Sublunuloceras), Oppelia calloviensis, "Oppelia subcostaria" = Oxycerites subcostarius
"Sublunuloceras aff. nodososulcatum" = Hecticoceras (Sublunuloceras) ammonite
"Oppelia subcostaria" = Oxycerites subcostarius Oppel 1862 ammonite
 Ammonitida - Perisphinctidae
Perisphinctes subtilis
Perisphinctes subtilis Neumayr 1871 ammonite
 Ammonitida - Reineckeiidae
Kellawaysites aff. planissimus
Kellawaysites aff. planissimus Jeannet 1951 ammonite
 Ammonitida - Parkinsoniidae
Parapatoceras calloviense, Parapatoceras spinosum
 Ammonitida - Macrocephalitidae
Indocephalites kheraensis, Macrocephalites macrocephalus
Macrocephalites macrocephalus Schlotheim 1813 ammonite
 Ammonitida - Stephanoceratidae
cf. Dhrumaites sp.
cf. Dhrumaites sp. Arkell 1952 ammonite
 Phylloceratida - Phylloceratidae
Sowerbyceras biarcuatum
Sowerbyceras biarcuatum Munier-Chalmas 1880 ammonite
 Nautilida - Paracenoceratidae
Paracenoceras calloviense
Paracenoceras calloviense Oppel 1858 nautiloid
Gastropoda
 Seguenzioidea - Eucyclidae
Calliomphalus sp.
Calliomphalus sp. Cossmann 1888 snail
Bivalvia
  - Aviculidae
Avicula sp.
Avicula sp. Bruguière 1791 clam