Kolmani River-1 well. Steevesipollenites binodosus Assemblage (Cretaceous to of Nigeria)

Where: Gombe, Nigeria (10.1° N, 10.7° E: paleocoordinates 5.6° S, 3.1° E)

• outcrop-level geographic resolution

When: Yolde and Gongila Formation, Cenomanian to Cenomanian (100.5 - 89.8 Ma)

• The Steevesipollenites binodosus Assemblage Zone (Cenomanian - Turonian) correlates to the Yolde and Gongila Formations.

Environment/lithology: terrestrial; lithified shale and lithified, fine-grained sandstone

• The Yolde Formation consists of a variable sequence of sandstones and shales. The sandstones are thin-bedded at the base, followed subsequently by alternations of sandy mudstones and shelly limestone.

•is dominantly a marine shale

•The Gongila Formation is the lateral equivalents of the Pindiga Formation which consists dominantly in marine shales facies with limestones at the base.

Size class: microfossils

Preservation: original sporopollenin

Primary reference: C. N. Nwojiji, P. Osterloff, A. Okoro and P. O. Ukeri. 2013. Palynostratigraphy and Age of the Sequence Penetrated by the Kolmani River 1 Well in the Gongola Basin, Northern Benue Trough, Nigeria. Journal of Geosciences and Geomatics 1(1):15-21 [C. Jaramillo/P. Santamarina]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 163724: authorized by Carlos Jaramillo, entered by Patricio Santamarina on 10.11.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Pteridopsida
  -
Leiotriletes "sp. A" Potonie and Kremp 1954
Cycadopsida
 Gnetales -
Steevesipollenites binodosus Stover 1964 cycads
Ginkgoopsida
 Ephedrales -
Ephedripites "sp. 3" Bolkhovitina and PotoniƩ 1958
Angiospermae
 Sapindales - Sapindaceae
Cupanieidites "spp." Cookson and Pike 1954 soapberry
  -
Retimonocolpites variplicatus Schrank and Mahmoud 1998
 Gunnerales -
 Mesangiosperms - Liliaceae
Liliacidites "spp." Couper 1953
Magnoliopsida
  -
Striatricolporites "spp." Leidelmeyer 1966
Striatopollis "spp." Krutzsch 1959