Asu River, near Agbani [Awgu Ndeaboh Shale] (Cretaceous of Nigeria)

Where: Nigeria (6.3° N, 7.6° E: paleocoordinates 7.3° S, 0.1° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Awgu Ndeaboh Shale Formation, Coniacian (89.8 - 86.3 Ma)

• STRATIGRAPHIC RELATIONS: From the Awgu Ndeaboh Shales. AGE: Coniacian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From unknown position in the unit.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified shale

• ENVIRONMENT: Presumably an offshore siliciclastic marine facies.
• SPECIFIC LITHOLOGY: Shale. 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 82791: 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.
Cephalopoda
 Ammonitida - Tissotiidae
Tissotia awguensis Reyment 1955 ammonite
 Ammonitida - Collignoniceratidae
? Peroniceras sp. de Grossouvre 1894 ammonite
"Peroniceras cf. westphalicum" = Peroniceras (Peroniceras) westphalicum von Strombeck 1859 ammonite