Goneplax cf. G. gulderi Bachmayer, 1953, 1814

Pasini, Giovanni, Garassino, Alessandro & Sami, Marco, 2019, Decapod assemblage from the late Miocene (early-middle Messinian) of the Romagna Apennines nearby Brisighella, Emilia-Romagna (N Italy), Natural History Sciences 6 (1), pp. 27-32 : 31

Goneplax cf. G. gulderi Bachmayer, 1953

Fig. 3B

Material and measurements: Eight carapaces in dorsal view ( MSF 2305 – lcxp: 8 mm, wcxp: 11 mm; MSF 2308 – lcxp: 8 mm, wcxp: 13 mm; MSF 2310 – lcxp: 11 mm, wcxp: 15 mm; MSF 2319 – lcxp: 4 mm, wcxp: 5 mm; MSF 2320 – lcxp: 8 mm, wcxp: 10 mm; MSF 2332 – lcxp: 4 mm, wcxp: 6 mm; MSF 2333 – lcxp: 12 mm, wcxp: 16 mm; MSF 2334 – lcxp: 10 mm, wcxp: 17 mm).

Discussion. The studied specimens fit the characters of Goneplax Leach, 1814 in having the typical dorsal carapace proxy characters sensu Schweitzer (2003) as pointed out by Garassino et al. (2013: 357). Moreover, according to Garassino et al. (2013: 357), the subtrapezoidal carapace with the frontal margin nearly as wide as the orbits and the dorsal surface of carapace, with raised transverse ridges suggest comparison with G. gulderi Bachmayer, 1953 .

Indeed, the general carapace shape and ornamentation of the studied specimens is very similar to the specimen reported from the late Miocene of Rio Popogna (Livorno, Tuscany) ( De Angeli et al., 2009: 187, Fig. 18A). This species has been previously recorded in Italy from the Miocene and Pliocene of Piedmont, Tuscany, and Sardinia (for updated list, see Garassino et al., 2013).

Figures

Fig. 3 - A) Monodaeus bortolottii Delle Cave, 1988, MSF 2300 (x 2.6). B) Goneplax cf. G. gulderi Bachmayer, 1953, MSF 2332 (x 10). C) Family, genus and species indet., MSF 2316 (x 16.6).