Bansara road, halfway between Cross River and Abakaliki (Cretaceous of Nigeria)

Where: Nigeria (6.3° N, 8.3° E: paleocoordinates 9.5° S, 0.9° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Nwofe Sandstone Formation, Late/Upper Albian (105.3 - 99.6 Ma)

• STRATIGRAPHIC RELATIONS: From the unnamed lithostratigraphic unit. AGE: Middle part of the Upper Albian, zone 4, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From near the top of the unit.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified sandstone

• ENVIRONMENT: Presumably an shallow siliciclastic marine facies.
• SPECIFIC LITHOLOGY: Sandstone. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Reyment; reposited in the BMNH

• COLLECTOR: R.A. Reyment. REPOSITORY: BMNH, London

Primary reference: R. A. Reyment. 1955. The Cretaceous Ammonoidea of southern Nigeria and the southern Cameroons. Geological Survey of Nigeria Bulletin 25:1-112 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 82767: authorized by Austin Hendy, entered by Austin Hendy on 01.08.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for Ammonoidea. NOMENCLATURE: Authoritative publication, but with somewhat antiquated nomenclature. Mostly identified to species resolution.
Show authors, comments, and common names
Cephalopoda
 Ammonitida - Brancoceratidae
Mortoniceras (Mortoniceras) cf. nodosocostatum, Mortoniceras (Mortoniceras) quadrinodosum
 Ammonitida - Oppeliidae
Gyaloceras ibo n. sp.
Gyaloceras ibo n. sp. Reyment 1955 ammonite