Traits name details
original description
Weaver, C. E. (1931). Paleontology of the Jurassic and Cretaceous of West Central Argentina. <em>Memoirs of the University of Washington.</em> 1: 1-469, pls. 1-62. page(s): 239, pl. 20, figs 99-102 [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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