Minute Silurian Oncocerid Nautiloids with Unusual Colour Patterns

@inproceedings{Manda2009MinuteSO,
  title={Minute Silurian Oncocerid Nautiloids with Unusual Colour Patterns},
  author={{\vS}těp{\'a}n Manda and Vojtěch Turek},
  year={2009}
}
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… 

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