Where: Nigeria (5.2° N, 8.2° E: paleocoordinates 5.1° S, 1.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Nkporo Shale Formation, Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• upper Nkporo Shale

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified shale

Size class: macrofossils

Preservation: mold/impression

Collection methods: specimens in the Department of Palaeontology, British Museum (Natural History), London, and in the Department of Geology, University of Ilorin, Nigeria; probably own field collection

Primary reference: P. M. P. Zaborski. 1985. Upper Cretaceous ammonites from the Calabar region, south-east Nigeria. Bull. Br. Mus. nat. Hist. (Geol.) 39(1):1-72 [M. Aberhan/S. Nurnberg]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 69625: authorized by Martin Aberhan, entered by Sabine Nürnberg on 01.03.2007

Creative Commons license: CC BY (attribution)