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First record of Porolepis (Sarcopterygii; Porolepiformes) from eastern Gondwana

2013; NRC Research Press; Volume: 50; Issue: 3 Linguagem: Inglês

10.1139/cjes-2012-0063

1480-3313

Zerina Johanson, Per Ahlberg, Alex Ritchie,

Evolution and Paleontology Studies

Porolepiformes (Sarcopterygii) are poorly represented in the Devonian of Australia and eastern Gondwana as a whole. New cosmine-covered lower jaws from the Mulga Downs Group, western New South Wales (?Pragian–Emsian or Eifelian), represent the first occurrence of Porolepis in Australia, a genus formerly known exclusively from the Northern Hemisphere. This material is assigned to the new species Porolepis foxi. The wide distribution of Porolepis, demonstrated by its occurrence in New South Wales, Europe, and Spitsbergen, contrasts with the generally high endemicity of the faunas in which it is present.