Traits taxon details
original description
(of Trigonia hyriiformis Wilckens, 1910 †) Wilckens, O. (1910). Die Anneliden, Bivalven und Gastropoden der Antarktischen Kreideformation. <em>Wissenschaftliche Ergebnisse der Schwedischen Südpolar Expedition 1901-1903.</em> Band 3, Lief. 12: 1-132., available online at https://www.biodiversitylibrary.org/page/49429821 page(s): 47, pl. 2, fig. 27 [details]
new combination reference
Zinsmeister, W. J. & Macellari, C. E. (1988). Bivalvia (Mollusca) from Seymour Island, Antarctic Peninsula. <em>Geological Society of America Memoir.</em> 169: 253-284. page(s): 282 [details] Available for editors 
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