Genus: Selenemys PEREZ-GARCIA & ORTEGA, 2011
Etymology: Greek, selene, "moon" and Greek, emys, "freshwater turtle"; In allusion to its broad shell with the surface covered with pits, like little craters. This ornamentation is opposite to that observed in the basal pancryptodiran turtle Solemys (the turtle of the Sun), also described in the Iberian Peninsula (Lapparent de Broin adn Murelaga, 1996).

Species: lusitanica PEREZ-GARCIA & ORTEGA, 2011
Etymology: Latin, Lusitania was the Roman name given to most of the west of the Iberian Peninsula (mainly Portugal), referring to the Lusitanian Basin.

Holotype: ALTSH.066

Locality: Fossil site PNV.16 (ALTSHN files), Santa Rita, Torres Vedras, Estramadar Province, Portugal.

Horizon: Praia da Amoreira-Porto Novo Member, Alcobaca Formation, Lourinha Group.

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Middle Late Jurassic.

Material: A shell with complete plastron and disarticulated carapace, which preserves the nuchal plate, the last neural, the two suprapygals, the anterior part of the pygal, several costals and peripherals, and fragments of other plates.

Referred material:

Locality: Peralta Locality, Lourinha, Estramadar Province, Portugal.

Horizon: Praia da Amoreira-Porto Novo Member, Alcobaca Formation, Lourinha Group.

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Middle Late Jurassic.

Material:

ALTSHN.117: A left xiphiplastron.

ALTSHN.118: An articulated shell that lacks a great part of the nuchal plate, some neurals and costals, most of the peripherals and much of the plastron.

ALTSHN.119: A second right costal plate.

ALTSHN.120: A first right peripheral plate.