Kolmani River-1 well. Aquilapollenites minimus Assemblage (Cretaceous of Nigeria)

Where: Gombe, Nigeria (10.1° N, 10.7° E: paleocoordinates 0.7° S, 4.3° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Gombe Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

Environment/lithology: deltaic; lithified, ferruginous, silty shale and lithified claystone

• See Figure 2
• The Gombe Formation is made up of three major lithofacies: (1) alternating beds of silty shales and fine-medium grained sandstones with ironstone intercalations, overlain by (2) medium grained quartz arenite with occasional and iron oxide cement and (3) brick-red coloured, fine - medium

•grained sandstone, with tabular cross-bedding highlighted by layers and streaks of pure white sandstones

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 163729: authorized by Carlos Jaramillo, entered by Patricio Santamarina on 10.11.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Monocolpites marginatus
Monocolpites marginatus Van der Hammen 1954
 Anthophyta -
Aquilapollenites minimus Belsky et al. 1965
Constructipollenites ineffectus
Constructipollenites ineffectus van Hoeken-Klinkenberg 1964
Psilamonocolpites medius
Psilamonocolpites medius Van der Hammen 1954
 Mesangiosperms - Arecaceae
 Mesangiosperms - Araceae
Cyathidites "spp." Couper 1953
Cyathidites minor Couper 1953
  - Polypodiaceae
Laevigatosporites ovatus Wilson and Webster 1946
  - Gleicheniaceae
Gemmastephanocolpites gemmatus
Gemmastephanocolpites gemmatus Van der Hammen and Garcia de Mutis 1966
Brevimonosulcites corrugatus
Brevimonosulcites corrugatus Yu and Zhang 1987
Distaverrusporites simplex