Calabar-Akamkpa road, 1 km N of junction [Odukpani Fm] (Cretaceous of Nigeria)

Where: Nigeria (4.6° N, 7.0° E: paleocoordinates 10.3° S, 2.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Odukpani Formation, Early/Lower Cenomanian (99.6 - 93.5 Ma)

• Lower? Cenomanian

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, gray shale

• 'The Odukpani Formation and Nkporo Shale are well exposed in road cuttings north-west of Calabar... The exposed parts of the Odukpani Formation consist here mainly of grey shales, pyritic at the base but calcareous and including numerous thin limestones higher up. A well-developed limestone-shale sequence occurs close to the top of the formation and at its base are the remnants after dissolution of another prominent limestone horizon.'

Size class: macrofossils

Preservation: mold/impression

Reposited in the BMNH

• 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 69632: authorized by Martin Aberhan, entered by Sabine Nürnberg on 01.03.2007, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to ammonoids described in text. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identifications.
Show authors, comments, and common names
Malacostraca
 Decapoda - Cenomanocarcinidae
Cenomanocarcinus dissimilis n. sp.
Cenomanocarcinus dissimilis n. sp. Collins 2010 crab
 Decapoda - Paranecrocarcinidae
"Paranecrocarcinus milbournei n. sp." = Pseudonecrocarcinus milbournei
"Paranecrocarcinus milbournei n. sp." = Pseudonecrocarcinus milbournei Collins 2010 crab
Cephalopoda
 Ammonitida - Desmoceratidae
Puzosia sp.
Puzosia sp. Bayle 1878 ammonite
 Ammonitida - Acanthoceratidae
Acompsoceras aff. renevieri
Acompsoceras aff. renevieri Sharpe 1857 ammonite
 Ammonitida - Forbesiceratidae
Forbesiceras varicostatum
Forbesiceras varicostatum Zaborski 1990 ammonite