Traits name details
original description
Gillet, S. (1920). Revision du groupe de la <em>Trigonia quadrata</em> Ag. <em>Bulletin de la Société géologique de France, 4e série.</em> 20: 153-157., available online at https://www.biodiversitylibrary.org/page/31125648 page(s): 156, pl. 7, figs 3, 4 [details]
basis of record
Cooper, M. R. (2020). On the Quadratotrigoniinae (Trigoniida: Myophorelloidea), their palaeobiogeography, evolution and classification. <em>Durban Natural Science Museum Novitates.</em> 39, 1-48. [details] Available for editors 
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