Where: Antarctica (85.1° S, 172.5° E: paleocoordinates 80.7° S, 70.8° E)
• coordinate estimated from map
• small collection-level geographic resolution
When: Fremouw Formation (Beacon Group), Early/Lower Triassic (252.2 - 247.2 Ma)
• According to Collinson et al. (2006, GSA Bull. 118(5/6) fig. 6) Lystrosaurus, Prolacerta and Thrinaxodon come from the lower part of the lower Fremouw Fm., about 13 m above formational base.
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial; carbonaceous claystone
Size class: macrofossils
Collected by J. Barrett, J. W. Kitching in 1967, 1969-1970, 1970-1971; reposited in the AMNH
Primary reference: E. H. Colbert and J. W. Kitching. 1977. Triassic Cynodont Reptiles From Antarctica. American Museum Novitates 2611:1-30 [J. Mueller/T. Liebrecht]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 87420: authorized by Johannes Mueller, entered by Torsten Liebrecht on 17.03.2009, edited by Richard Butler, Emma Dunne and Chris Sidor
Creative Commons license: CC BY (attribution)
Taxonomic list
Osteichthyes | |
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Reptilia | |
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Antarctanax shackletoni n. gen. n. sp.3
Antarctanax shackletoni n. gen. n. sp.3 Peecook et al. 2019 archosauromorph UWBM 95531, consisting of eight presacral vertebrae, several ribs, a left humerus, left metatarsals I–V phalanges, unguals, and unidentifiable flat bones on one slab and an almost complete right pes and a dorsal rib on a second, which was adjoining the first but separated during preparation. Specimen UWBM 95531 is considered to represent a somatically mature individual because all neural arches present are completely fused to their centra, with no indications of sutures.
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Amphibia | |
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