Species: primoevus BERGOUNIOUX, 1937 ( destoryed during World War II Lapparent de Brion pers. com to ANQUETIN et al., 2017) (nomen dubium)
Etymology:

Holotype: MNHN uncatalogued

Locality: Cap de la Heve, near le Havre, Department of Seine-Maritime, France.

Horizon: Formation unknown.

Biostratigraphy:

Age: Kimmeridgian Stage, Malm Epoch, Late Jurassic.

Material: A poorly preesrved plastron.