Nsungwe 2B (Oligocene of Tanzania)

Also known as Mbeya

Where: Mbeya, Tanzania (8.9° S, 33.5° E: paleocoordinates 11.2° S, 30.2° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Songwe Member (Nsungwe Formation), Late/Upper Oligocene (28.4 - 23.0 Ma)

• Situated 30m above the contact between the Utengule and Songwe members of the Nsungwe Formation. The age of the fossil-bearing unit is tightly constrained between two volcanic tuffs dated by U-Pb CATIMS (U-Pb chemical abrasion thermal ionizationmass spectrometry) geochronology at 25.237 and 25.214 Myr ago

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; medium-grained, tuffaceous, intraclastic, green sandstone

• Hyperconcentrated flow or lahar that was transported by a fluvial channel into a shallow wetland environment
• Pale green, medium‐grained, matrix‐supported tuffaceous (bentonitic) sandstone with ash and clay pebble clasts

Size class: macrofossils

Primary reference: N. J. Stevens, E. R. Seiffert, P. M. O'Connor, E. M. Roberts, M. D. Schmitz, C. Krause, E. Gorscak, S. Ngasala, T. L. Hieronymus and J. Temu. 2013. Palaeontological evidence for an Oligocene divergence between Old World monkeys and apes. Nature 497:611-614 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 179687: authorized by Philip Mannion, entered by Philip Mannion on 24.06.2016, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Amphibia
 Salientia - Pipidae
Xenopus (Xenopus) sp.
Xenopus (Xenopus) sp. Wagler 1827 clawed frog
RRBP 13274B
Mammalia
 Primates -
Nsungwepithecus gunnelli n. gen. n. sp., Rukwapithecus fleaglei n. gen. n. sp.
Nsungwepithecus gunnelli n. gen. n. sp. Stevens et al. 2013 monkey
RRBP 11178 - holotype
Rukwapithecus fleaglei n. gen. n. sp. Stevens et al. 2013 ape
RRBP 12444A - holotype