Abstract
The Humevale Siltstone (late Silurian to Early Devonian, Gorstian to Pragian) and Woori Yallock Formation (Early Devonian, Emsian) of central Victoria, Australia, contain rich invertebrate fossil faunas including Ostracoda. Eight ostracod taxa are recognized and illustrated herein: Velibeyrichia wooriyallockensis (Chapman), Velibeyrichia (s.l.) australiae (Chapman), Velibeyrichia sp. 1, Velibeyrichia sp. 2, Beyrichia? ligatura (Chapman), Ulrichia sp., Euglyphella sp. and Strepulites sp. The ostracods are preserved in siltstones and mudstones as natural moulds. Ostracod assemblages are mainly shallow marine and likely include moderate- to low-energy biocoenoses, pseudo-biocoenoses (gravity flow accumulations) and thanatocoenoses.
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