NMT Z29 (Triassic of Tanzania)

Where: Ruvuma, Tanzania (10.3° S, 35.1° E: paleocoordinates 53.7° S, 22.9° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• "above the base of the Lifua Member, probably near middle of the member...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."

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Nesbitt et al. in 2007

Collection methods: quarrying, surface (float), surface (in situ),

• NMT: National Museum of Tanzania, Dar es Salaam

Primary reference: C. T. Griffin and S. J. Nesbitt. 2016. The femoral ontogeny and long bone histology of the Middle Triassic (?late Anisian) dinosauriform Asilisaurus kongwe and implications for the growth of early dinosaurs. Journal of Vertebrate Paleontology 36(3):e1111224:1-22 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 181057: authorized by Matthew Carrano, entered by Matthew Carrano on 16.08.2016, edited by Chris Sidor

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Dinosauromorpha - Silesauridae
Asilisaurus kongwe Nesbitt et al. 2010 ornithodiran
NMT RB171, femur
Osteichthyes
 Therapsida - Trirachodontidae
Cricodon metabolus Crompton 1955 therapsid
NMT RB377, RB412, and RB413, humeri