Ankirihitra, unit 1d (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)

• Indosphinctes patina 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 98131: 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
Cephalopoda
 Ammonitida - Macrocephalitidae
Eucycloceras eucyclum
 Ammonitida - Perisphinctidae
Indosphinctes natwaris, Indosphinctes peregrinus, Subgrossouvria cf. gudjinsirensis
Indosphinctes natwaris Spath 1931 ammonite
Indosphinctes peregrinus Spath 1931 ammonite
Subgrossouvria cf. gudjinsirensis Waagen 1875 ammonite