Where: Mahajanga, Madagascar (16.5° S, 46.2° E: paleocoordinates 40.5° S, 29.6° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Microfossil Bed Member, Early/Lower Albian (112.0 - 109.0 Ma)

• From Ammonite bed. Ammonites collected from a sandstone layer ("ammonite bed"), which is 15-20 cm thick. Above this unit is a 15 cm thick bed of siltstone ("microfossil bed", with sparse gastropods and bivalves. Overlain by further barren siltstone of 10 cm thickness. The fauna belongs to the Cleoniceras besairiei Zone of the lower Albian (Collignon, 1963).

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, glauconitic sandstone

Size class: macrofossils

Reposited in the MfN

Collection methods: bulk, sieve,

• The material is deposited in the Museum für Naturkunde, Berlin, Germany. This is a recollection of a locality originally reported by Collignon (1949), based on collections by H. Besairie and V. Hourcq. This locality fell into oblivion until rediscovered by Fren ch-Madagascar ammonite traders a few years ago, who had relocated the the locality. Samples dried and treated with a saturated Glaubers salt solution, then washed through sieves with mesh sizes of 2, 1, 0.5, 0.2, and 0.064 mm. Gastropods only picked from the 2, 1 and 0.5 mm fractions.

Primary reference: S. Kiel. 2006. New and little-known gastropods from the Albian of the Mahajanga Basin, northwestern Madagascar. Journal of Paleontology 80(3):455-476 [A. Miller/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 60071: authorized by Austin Hendy, entered by Austin Hendy on 29.04.2006, edited by Alissa Watson

Creative Commons license: CC BY (attribution)