Traits taxon details
original description
Bancroft, B. B. (1928). On the notational representation of the rib-system in Orthacea. <em>Manchester Literary and Philosophical Society, Memoirs and Proceedings.</em> 72: 53-90. [details]
basis of record
Hints, L.; Harper, D. A. T. (2015). The Hirnantian (Late Ordovician) brachiopod fauna of the East Baltic: Taxonomy of the key species. <em>Acta Palaeontologica Polonica.</em> 60(2): 395-420. note: Lists species as type of genus Heterorthina, and includes type locality and literature, p. 411. [details]
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