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Cenomanocarcinidae n. fam., a new Cretaceous podotreme family (Crustacea, Decapoda, Brachyura, Raninoidia), with comments on related families

Danièle GUINOT, Francisco J. VEGA & Barry W. M. VAN BAKEL

en Geodiversitas 30 (4) - Pages 681-719

Published on 29 December 2008

Exceptionally well-preserved specimens of Cenomanocarcinus vanstraeleni Stenzel, 1945 from the Turonian of Mexico and Colombia, plus a remarkable Colombian C. aff. vanstraeleni of Coniacian age, as well as Cenomanocarcinus sp. from the upper Albian of Colombia, provide the basis for the definition of the Cenomanocarcinidae n. fam., a new podotreme family which is close to the Palaeocorystidae Lőrenthey in Lőrenthey & Beurlen, 1929 and assigned to the subsection Raninoidia De Haan, 1839. The new family includes the Cretaceous Cenomanocarcinus Van Straelen, 1936, which went extinct at the end of the Cretaceous, and, with reservation, the early Eocene Campylostoma Bell, 1858. Hasaracancer Jux, 1971 is considered synonymous with Cenomanocarcinus. The status of the Necrocarcinidae Förster, 1968 is revised, being also assigned to the Podotremata, albeit with a query because the female gonopore could not be observed in any specimen available. Inclusion of the Cenomanocarcinidae n. fam., Necrocarcinidae emend. and, preliminarily, the Orithopsidae Schweitzer, Feldmann, Fam, Hessin, Hetrick, Nyborg & Ross, 2003 and Camarocarcinus Holland & Cvancara, 1958 next to the Palaeocorystidae is discussed. A standardization is proposed here to homogenize the designation of the higher-ranked podotreme taxa, as follows: Dromioidia de Haan, 1833 (= Dromiacea De Haan, 1833, emended from standardization), Homoloidia De Haan, 1839, Cyclodorippoidia Ortmann, 1892, and Raninoidia De Haan, 1839.

Keywords :

Crustacea, Decapoda, Brachyura, Cenomanocarcinidae n. fam., Cenomanocarcinus vanstraeleni, Necrocarcinidae, Orithopsidae, Palaeocorystidae, Raninoidea, Raninoidia, Cretaceous, new family

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