ammonites
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western Etjo Mtn, above upper arenaceous layer (Triassic to of Namibia)

Where: Namibia (21.1° S, 16.4° E: paleocoordinates 54.0° S, 9.9° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Cynognathus subzone C other zone, Upper Member (Omingonde Formation), Anisian to Anisian (247.2 - 235.0 Ma)

• Referred to as the "Lower Etjo Beds" by Keyser (1973) but now called the Omingonde Formation. "Based on the co-occurrence of Kannemeyeria and Erythrosuchus in subzone B of the Cynognathus Assemblage Zone, the Omingonde Formation may be broadly assigned an Anisian age." (Damiani et al. 2007. Palaeontology 50: 1531-1546)

•Abdala & Smith (2009) suggest the possibility of two different faunas in the upper Omingonde Formation; an older one corresponding to Cynognathus Subzone B and the upper possibly to Cynognathus Subzone C. On the basis of the presence of Chiniquodon in the upper fauna, Abdala & Smith (2009) tentatively suggested that the Omingonde could extend into the early Ladinian. Based on the high stratigraphic occurrence of this collection in the upper Omingonde, it would be late Anisian-early Ladinian in age.

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; nodular shale

Size class: macrofossils

Collected by Keyser

• Specimens in the collections of the Geological Survey of South Africa, Pretoria

Primary reference: A. W. Keyser. 1973. A new Triassic vertebrate fauna from South West Africa. Palaeontologia africana 16:1-15 [R. Butler/R. Butler] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 99455: authorized by Richard Butler, entered by Richard Butler on 11.11.2010

Creative Commons license: CC BY (attribution)