Traits name details
original description
Hall J. (1847). Palaeontology of New York, vol. 1, Containing descriptions of the organic remains of the lower division of the New York system, (equivalent of the Lower Silurian rocks of Europe). <em>Albany: C. van Benthuysen.</em> xxiii+1-338., available online at https://biodiversitylibrary.org/page/55227010 page(s): 43-44, 175, pl. 10, fig. 9a-h, pl. 38, fig. 1a-g [details]
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