Traits taxon details
original description
Medina, F. A. (1987). Megatrigoniinae del Albiano del Lago Cardiel, Provincia de Santa Cruz, y <em>Trigonia hyriiformis</em> Wilckens del Cretácico antártico (Bivalvia). <em>Contribución del Instituto Antártico Argentino.</em> 356: 1-20. page(s): 7, pl. 1, figs 1-4 [details] Available for editors 
basis of record
Cooper, M. R. & Leanza, H. A. (2019). On the Middle Jurassic – Early Cretaceous Megatrigoniinae (Bivalvia, Trigoniida): their biogeography, evolution and classification. <em>Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen.</em> 291 (1): 19-40., available online at https://doi.org/10.1127/njgpa/2019/0787 [details] Available for editors 
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