Porphyrocrinus Gislen 1925

• Main Authors: Eléaume, Marc, Bohn, Jens-Michael, Roux, Michel, Améziane, Nadia
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Crinoidea; Millericrinida; Phrynocrinidae; Porphyrocrinus; Antarc*; Antarctica
• Online Access: https://doi.org/10.5281/zenodo.6180839; http://treatment.plazi.org/id/D558AA75E0144C6E6F85F9965F08F840

Genus Porphyrocrinus Gislén, 1925 Type species of the genus: Porphyrocrinus verrucosus Gislén, 1925 Synonymy: Porphyrocrinus Gislén, 1925: 91 –92;? Monachocrinus pars Gislén, 1933: 483–485; Porphyrocrinus A.M. Clark, 1973: 281 –282; 1982: 123; Rasmussen, 1978: T847; Roux et al. , 2002: 815, 818, 824; Messing, 2007: 106–107; Hess, 2011a: T157. Remarks. The species of the genus Porphyrocrinus have 5 arms or more with the first pinnule (or first branching) on Br8 or beyond and a basal ring with 5 conspicuous sutures. The xenomorphic stalk has proximal columnals with pentamerous symmetry and the same type of synarthry in the mesistele and dististele with a fulcral ridge of two separated segments always along the greater facet diameter. Published as part of Eléaume, Marc, Bohn, Jens-Michael, Roux, Michel & Améziane, Nadia, 2012, Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica, pp. 1-22 in Zootaxa 3425 on page 15, DOI: 10.5281/zenodo.209419