PBDB Collection

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

Show authors, comments, and common names

unclassified
-	Taxadiaceapollenites hiatus, Arauculidites australis Taxadiaceapollenites hiatus Arauculidites australis
Pteridopsida
-	Cyathidites "spp.", Cyathidites minor Cyathidites "spp." Couper 1953 Cyathidites minor Couper 1953
Polypodiopsida
- Polypodiaceae	Laevigatosporites ovatus Laevigatosporites ovatus Wilson and Webster 1946
- Gleicheniaceae	Gleicheniidites delicatus Gleicheniidites delicatus Pocock 1970
Angiospermae
Mesangiosperms - Arecaceae	Longapertites percrasus Longapertites percrasus palm
Mesangiosperms - Araceae	Proxapertites miniporatus Proxapertites miniporatus
-	Retimonocolpites perireticulatus Retimonocolpites perireticulatus

Anthophyta -	Aquilapollenites minimus Aquilapollenites minimus Belsky et al. 1965
Psilamonocolpites medius
-	Psilamonocolpites medius Psilamonocolpites medius Van der Hammen 1954
Constructipollenites ineffectus
-	Constructipollenites ineffectus Constructipollenites ineffectus van Hoeken-Klinkenberg 1964
Monocolpites marginatus
-	Monocolpites marginatus Monocolpites marginatus Van der Hammen 1954
Gemmastephanocolpites gemmatus
-	Gemmastephanocolpites gemmatus Gemmastephanocolpites gemmatus Van der Hammen and Garcia de Mutis 1966
Distaverrusporites simplex
-	Distaverrusporites simplex Distaverrusporites simplex Muller 1966
Brevimonosulcites corrugatus
-	Brevimonosulcites corrugatus Brevimonosulcites corrugatus Yu and Zhang 1987