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): 235 [details] Available for editors
MolluscaBase eds. (2024). MolluscaBase. Trigonia signata var. keideli C. E. Weaver, 1931 †. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://www.marinespecies.org/traits./aphia.php?p=taxdetails&id=870046 on 2025-04-03
Marine Species Traits editorial board (2025). Marine Species Traits. Trigonia signata var. keideli C. E. Weaver, 1931 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=870046 on 2025-04-03
original descriptionWeaver, 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): 235 [details] Available for editors