U15/1, east of the Mkongleko River (Triassic of Tanzania)

Also known as Field locality U15/1

Where: Ruvuma, Tanzania (10.5° S, 35.5° E: paleocoordinates 54.0° S, 23.4° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Cynognathus Assemblage Zone Subzone C other zone, Lifua Member (Manda Beds Formation), Anisian (247.2 - 242.0 Ma)

• Lifua Member of the Manda beds is "correlated with Subzone C of the Cynognathus Assemblage Zone. This correlation was based on the shared occurrences of the dicynodont Angonisaurus and the cynodonts Diademodon and Cricodon. Subzone C of the Cynognathus Assemblage Zone is suggested to be late Anisian. The Rio Mendoza Formation of Argentina correlates with Subzone C of the Cynognathus Assemblage Zone(Rubidge 2005), and thus the Lifua Member of the Manda Beds. The top of the Rio Mendoza Formation has been dated at 243 ± 5 Ma (Avila et al. 2006), which is consistent with the Anisian age as predicted by biostratigraphy." (Nesbitt et al. 2010: Nature 464:95-98)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; siliciclastic sediments

• "other localities in the immediate area are characterized by fluvial sediments"

Size class: macrofossils

Collected by BMNH - University of London joint palaeontological expedition in 1963; reposited in the BMNH

Primary reference: P. M. Barrett, S. J. Nesbitt, and B. R. Peecook. 2014. A large-bodied silesaurid from the Lifua Member of the Manda beds (Middle Triassic) of Tanzania and its implications for body-size evolution in Dinosauromorpha. Gondwana Research [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 159740: authorized by Richard Butler, entered by Richard Butler on 08.08.2014, edited by Emma Dunne

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Diapsida -
Archosauriformes indet. Gauthier 1986 archosauromorph
NHMUK R36620, "Pallisteria"
 Dinosauromorpha - Silesauridae
Silesauridae indet. Langer et al. 2010 ornithodiran
NHMUK R16303, partial right femur
 Pseudosuchia -
Mambawakale ruhuhu n. gen. n. sp.
Mambawakale ruhuhu n. gen. n. sp. Butler et al. 2022 archosaur
Holotype. NHMUK R36620, partial skull including premaxillae, maxillae, vomers, palatines, pterygoids, ectopterygoids and fragments of the jugals and basipterygoid, with associated hemimandibles, hyoids and isolated maxillary or dentary teeth. These cranial remains are associated (see below) with an incomplete postcranium, including an atlantal intercentrum, partial axis and partial third cervical vertebra, a mostly complete left manus, and additional poorly preserved fragments.