Casey, R. (1961). The stratigraphical palaeontology of the lower Greensand. <em>Palaeontology.</em> 3(4):487–621, pl. 77–84. page(s): 581 [details] Available for editors [request]
MolluscaBase eds. (2024). MolluscaBase. Trapezicardita R. Casey, 1961 †. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1515510 on 2024-07-14
original descriptionCasey, R. (1961). The stratigraphical palaeontology of the lower Greensand. <em>Palaeontology.</em> 3(4):487–621, pl. 77–84. page(s): 581 [details] Available for editors [request]