A proposal for a new family: Montezumellidae (Crustacea, Decapoda, Brachyura) and description of new genus and species Moianella cervantesi from the Priabonian (Late Eocene) of Catalonia (NE of Iberian Peninsula)

摘要

A new brachyuran family is proposed in order to accommodate Montezumella Rathbun, 1930, previously assigned to Cheiragonidae Ortmann, 1893. The establishment of Montezumellidae n. fam. is based on the examination of several samples of both sexes of Montezumella, with well-preserved thoracic and abdominal structures. A new genus and species, Moianella cervantesi n. gen., n. sp. from the Priabonian (late Eocene) transitional levels of central Catalonia (NE of Iberian Peninsula) is described herein and assigned to the new family. The taxonomic placement of Montezumellidae n. fam. is discussed. Furthermore, "Atelecyclus" gorodiskii Rémy, 1959 in Gorodiski and Rémy, 1959, considered as atelecyclid, is herein attributed with reserve into the new family.