Traits taxon details
original description
(of ) Hall, J. (1860). Descriptions of new species of fossils, from the Hamilton Group of Western New-York, with notices of others from the same horizon in Iowa and Indiana. <em>Annual Report of the Regents of the University on the condition of the State Cabinet of Natural History. Contributions to Palaeontology.</em> 13: 76-94., available online at https://www.biodiversitylibrary.org/page/35839418 [details]
basis of record
Schemm-Gregory, M. (2008). New interpretations of the phylogeny and taxonomy of delthyridoid spiriferids (Brachiopoda, Lower and Middle Devonian). <em>Bulletin of Geosciences.</em> 83(4): 401-448., available online at https://doi.org/10.3140/bull.geosci.2008.04.401 [details]
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