Traits taxon details
original description
von Helmersen, G. (1847). Mittheilungen an Professor Bronn gerichtet. <em>Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefakten-Kunde.</em> 18: 330-331. [details]
basis of record
Muir-Wood, H.; Cooper, G. A. (1960). Morphology, classification and life habits of the Productoidea (Brachiopoda). <em>Geological Society of America Memoir.</em> 81: 1-447. [details]
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