Boletín de la Sociedad Geológica Mexicana Volumen 65, núm. 2, 2013, p. 329-334 http://dx.doi.org/10.18268/BSGM2013v65n2a14

Calappa granulata (Linnaeus, 1758) (Crustacea, Decapoda, Brachyura, Calappidae) and Astiplax asperan. gen., n. sp. (Crustacea, Decapoda, Brachyura, Goneplacidae) from the Asti sands Fm. (Late Pliocene) of S. Pietro (Asti, Piedmont, NW Italy)

Alessandro Garassino^1,*, Giovanni Pasini²

¹ Museo di Storia Naturale, Sezione di Paleontologia, Corso Venezia 55, 20121 Milano, Italia.
² Via Alessandro Volta 16, I-22070 Appiano Gentile (Como), Italia.

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 Abstract

Two crabs from the Pliocene sands of S. Pietro (Asti, Piedmont, NW Italy) have been assigned to Calappa granulata (Linnaeus, 1758) (Calappidae De Haan, 1833) and to Astiplax aspera n. gen., n. sp. (Goneplacidae MacLeay, 1838). Although C. granulata has already been reported from the Pliocene of other Italian regions, the Piedmont specimen represents one of the most complete carapaces known to date in the fossil record of this extant species. The discovery of Astiplax n. gen., with A. aspera n. sp. increases the number of species of Goneplacidae from the Pliocene of Italy, limited to Goneplax rhomboides (Linnaeus, 1758) and G. sacciCrema, 1895.

Keywords: Crustacea, Decapoda, Brachyura, Late Pliocene, Italy.