Minute Silurian Oncocerid Nautiloids with Unusual Colour Patterns

  title={Minute Silurian Oncocerid Nautiloids with Unusual Colour Patterns},
  author={{\vS}. Manda and V. Turek},
A minute Silurian oncocerid Cyrtoceras pollux, from the Prague Basin is assigned here to the genus Pomerantsoceras. The only so far known species of this genus comes from the Upper Ordovician (Hirnantian) of Estonia. Pomerantsoceras thus represents, except for un-revised poorly understood taxa, the single known oncocerid genus surviving the end-Ordovician extinction events. Cyrtoceras pollux is unusual among the Silurian nautiloids because of its small shell. Colour pattern characterised by a… Expand
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Colour Patterns in Early Devonian Cephalopods from the Barrandian Area: Taphonomy and taxonomy
Five cephalopod specimens from the Lower Devonian of Bohemia (Czech Republic) preserve colour patterns. They include two taxonomically undeterminable orthoceratoids and three oncocerid nautiloidsExpand
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  • J. Young
  • Transactions of the Glasgow Geological Society
  • 1871
This last and highest class of the mollusca is represented by six genera and a considerable number of species. They range from the lower to the upper limestone series, but the greatest number andExpand
The fossil record, function, and possible origins of shell color patterns in Paleozoic marine invertebrates
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