† Triforis costulata Deshayes, 1866
Triforis costulatus Deshayes, 1866: 242, pl. 82, fig. 20, 21.
Triforis (Epetrium) costulata Deshayes — Harris & Burrows 1891: 89.
Type locality. France, Parues, Paris Basin .
Type stratum. Middle Eocene, Lutetian.
Type material. Type material in UCBL (pers. com. J.-M. Pacaud with PGA, 11 April 2020) .
Distribution. France (Deshayes 1866; Cossmann 1889; Harris & Burrows 1891).
Geological age. Eocene (Cossmann 1889; Harris & Burrows 1891).
Remarks. The genus Triforis is of feminine gender, therefore the name should be Triforis costulata .