New species, genera and a family of hermit crabs (Crustacea, Anomura, Paguroidea) from a mid-Cretaceous reef of Navarra, northern Spain

Authors: Fraaije, René H.B.; Klompmaker, Adiël A.; Artal, Pedro

Source: Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, Volume 263, Number 1, January 2012 , pp. 85-92(8)

Publisher: E. Schweizerbart'sche Verlagsbuchhandlung

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Abstract:

Two new paguroids, Cretatrizocheles olazagutiensis n. gen., n. sp. and Mesoparapylocheles michaeljacksoni n. gen., n. sp., both based on carapaces, are described and added to the very diverse mid-Cretaceous (Albian-Cenomanian) decapod crustacean fauna of the reefal deposits near Alsasua (Navarra, northern Spain). The description of Annuntidiogenes worfi is emended on the basis of a newly discovered, much more complete carapace. Mesoparapylocheles n. gen. is a member of the Parapylochelidae n. fam., whereas Cretatrizocheles n. gen. is a member of the Trizochelinae. These species show that the linea transversalis, introduced by neontologists for a groove lateral and/or posterior to the cervical groove, is an evolved part of the branchiocardiac groove.

Keywords: PAGUROIDEA; PARAPYLOCHELIDAE N. FAM; PYLOCHELIDAE; DIOGENIDAE; ALBIAN-CENOMANIAN; CRETACEOUS; SPAIN

Document Type: Research article

DOI: http://dx.doi.org/10.1127/0077-7749/2012/0213

Publication date: 2012-01-01

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