Collinson Ridge (42.5 metres above base) (Triassic of Antarctica)

Also known as Cumulus Hills

Where: Antarctica (85.2° S, 175.5° W: paleocoordinates 81.8° S, 69.3° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Fremouw Formation (Beacon Group), Early/Lower Triassic (252.2 - 247.2 Ma)

• Lower part of the Fremouw Formation, Early Triassic age

• bed-level stratigraphic resolution

Environment/lithology: "floodplain"; gray, green siltstone

• "greenish-gray siltstone"

Size class: macrofossils

Collected in 1977-78

Collection methods: quarrying, surface (in situ),

• WSU: Wayne State University

Primary reference: W. R. Hammer and J. W. Cosgriff. 1981. Myosaurus gracilis, an anomodont reptile from the Lower Triassic of Antarctica and South Africa. Journal of Paleontology 55(2):410-424 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 105602: authorized by Richard Butler, entered by Richard Butler on 22.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Dicynodontia -
Myosaurus gracilis Hammer and Cosgriff 1981 dicynodont
WSU 0975, nearly complete skull. WSU 0976, lower jaw