Cenomanocarcinus inflatus Van Straelen, 1936

Van Bakel, Barry W. M., Guinot, Danièle, Artal, Pedro, Fraaije, René H. B. & Jagt, John W. M., 2012, A revision of the Palaeocorystoidea and the phylogeny of raninoidian crabs (Crustacea, Decapoda, Brachyura, Podotremata) 3215, Zootaxa 3215 (1), pp. 1-216 : 56

Cenomanocarcinus inflatus Van Straelen, 1936

( Fig. 18A, D )

Material examined. Dorsal carapace, upper Cenomanian, Butte de Gazonfier, Le Mans, France ( MNHN J08587 [see Van Straelen 1936: pl. 4, fig. 8]; MAB k. 2968 represents a cast); dorsal carapace, same provenance ( MNHN R05504, the original of A. Milne-Edwards in Guillier 1886: 244); dorsal carapaces, same provenance ( MHN LM 3804, MHN LM 3806).

Remarks. Specimen MNHN J08587 ( Fig. 18A, D ) was illustrated by Van Straelen (1936: pl. 4, fig. 8) as ‘topotype’. The name proposed by A. Milne-Edwards in Guillier (1886), was a nomen nudum because a diagnosis was not given. Van Straelen (1936: 37, 38) stated that the type (A. Milne-Edwards’ original) was probably in the MNHN palaeontological collections. This specimen was designated lectotype by Breton & Collins (2007: 18). MNHN J08587 is, however, a carapace from the Hébert Collection (Collections de la Sorbonne), whereas the original of A. Milne-Edwards bears registration number MNHN R05504. The latter is considered here the holotype, of C. inflatus (see ICZN 1999, Art. 73.1.1), and Van Straelen (1936) as the author of the taxon, because he was the first to present a diagnosis, retaining the name suggested earlier by A. Milne-Edwards in Guillier (1886). The lectotype designation by Breton & Collins (2007) is therefore invalid.

Figures

FIGURE 18. A, D. Cenomanocarcinus inflatus Van Straelen, 1936 (Cenomanocarcinidae), MNHN J08587 (lectotype), photograph of MAB k. 2968 (cast), upper Cenomanian, Butte de Gazonfier, Le Mans (northwestern France); dorsal and left lateral views (direction of photography in D indicated by arrow in A); B, C, E, Cenomanocarcinus vanstraeleni Stenzel, 1945, MAB k. 2909 (B, C; indeterminate sex), upper Albian-lower Cenomanian (Pawpaw Formation), Tarrant County, Texas (U.S.A); dorsal and left lateral views (direction of photography in C indicated by arrow in B); MAB k. 2885 (E; indeterminate sex), dorsal view of carapace; F, Cenomanocarcinus beardi Schweitzer, Feldmann, Fam, Hessin, Hetrick, Nyborg & Ross, 2003a, MAB k. 2880 (indeterminate sex), Cenomanian (Woodbine Formation), Wagner Park, Texas (U.S.A), dorsal view of carapace. ebs, epibranchial spine; pbs, posterobranchial spine. Scale bars: 10mm.