Also known as Nsungwe Formation, Rukwa Basin
Where: Mbeya, Tanzania (8.9° S, 33.2° E: paleocoordinates 11.3° S, 29.9° E)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Songwe Member (Nsungwe Formation), Late/Upper Oligocene (28.4 - 23.0 Ma)
• The Nsungwe Formation belongs to the younger part of the infill of the Rukwe Rift Basin (Red Sandstone Group). It "is subdivided into the lower Utengule Member and upper Songwe Member, with the snake-bearing Songwe Member assigned a Late Oligocene (24.95 MY) age based on biostratigraphy, dated ash beds, and detrital zircon geochronology" (McCartney et al. 2014).
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial; red siliciclastic sediments
Size classes: macrofossils, mesofossils
Collection methods: mechanical,
• Snake material was mechanically prepared at the Ohio University Fossil Preparation and Imaging Facility.
•RRBP = Rukwa Rift Basin Project of the Tanzanian Antiquities Unit
Primary reference: J. A. McCartney, N. J. Stevens, and P. M. O’Connor. 2014. The Earliest Colubroid-Dominated Snake Fauna from Africa: Perspectives from the Late Oligocene Nsungwe Formation of Southwestern Tanzania. PLoS ONE 9(3):e90415 [J. Mueller/T. Liebrecht]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 167432: authorized by Johannes Mueller, entered by Torsten Liebrecht on 17.03.2015, edited by Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Colubroidea "morphotype B" Oppel 1811 snake number of specimens not specified in the reference but probably more than one
Colubroidea indet. Oppel 1811 snake RRBP 07657 (fragmentary vertebra of possibly juvenile individual, from "Big Wall"); RRBP 09284 (caudal vertebra, "distinct from Colubroid Morphotype C in having hemapophyses")
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Rukwanyoka holmani n. gen. n. sp.
Rukwanyoka holmani n. gen. n. sp. McCartney et al. 2014 boa RRBP 10041 (holotype, mid-trunk vertebra); RRBP 11543B (referred specimen, mid- or posterior trunk vertebra)
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Mammalia | |
Pakakali rukwaensis n. gen. n. sp.2
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Amphibia | |
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