Aboine River, Ezillo, Ogoja Province (Cretaceous of Nigeria)

Where: Nigeria (6.4° N, 7.8° E: paleocoordinates 7.5° S, 0.3° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Eze-Aku Shales Formation, Early/Lower Turonian (93.5 - 89.3 Ma)

• STRATIGRAPHIC RELATIONS: From the Eze-Aku Shales. AGE: Early Turonian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From unknown position within the unit.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified shale

• ENVIRONMENT: Presumably an shallow 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. 1954. Some new Upper Cretaceous ammonites from Nigeria. Colonial Geology and Mineral Resources 4(3):248-270 [A. Hendy/A. Hendy/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 82782: 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 - Vascoceratidae
Ezilloella ezilloensis n. gen. n. sp., "Pachyvascoceras costatum n. sp." = Vascoceras proprium, "Pachyvascoceras cf. globosum" = Vascoceras globosum, "Paravascoceras aff. chevalieri" = Vascoceras cauvini
Ezilloella ezilloensis n. gen. n. sp. Reyment 1954 ammonite
"Pachyvascoceras costatum n. sp." = Vascoceras proprium Reyment 1954 ammonite
"Pachyvascoceras cf. globosum" = Vascoceras globosum Reyment 1954 ammonite
"Paravascoceras aff. chevalieri" = Vascoceras cauvini Chudeau 1909 ammonite
 Ammonitida - Coilopoceratidae
 Ammonitida - Acanthoceratidae
Nigericeras ogojaense Reyment 1955 ammonite
"Mammites dixeyi" = Morrowites dixeyi Reyment 1955 ammonite
Pseudaspidoceras curvicostatum Reyment 1955 ammonite