Traits taxon details
original description
Kielan-Jaworowska, Zofia. (1966). Polychaete jaw apparatuses from the Ordovician and Silurian of Poland and a comparison with modern forms. <em>Palaeontologia polonica.</em> 16: 1-152., available online at http://www.palaeontologia.pan.pl/Archive/1966-16.pdf [details] Available for editors
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