Goneplax, Leach, 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).