Ptilocrinus (Chambersaecrinus) brucei Vaney

• Main Author: Roux, Michel
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Crinoidea; Hyocrinida; Hyocrinidae; Ptilocrinus; Ptilocrinus brucei; Scotia Sea; South Atlantic Ocean; South Georgia Island; South Orkney Islands; South Shetland Islands; Weddell Sea
• Online Access: https://doi.org/10.5281/zenodo.6095279; http://treatment.plazi.org/id/03FFAD25FFD4FFE15483FF4DAA60FBBF

Ptilocrinus (Chambersaecrinus) brucei Vaney in Wilton, 1908 Figures 9–16, Tables 9–15. Synonymy: Ptilocrinus brucei Vaney in Wilton, 1908: fig. 70, pl. 23; Vaney & John, 1939: 661–664, 1 pl.; A.H. Clark, 1915: 161; Smaldon et al. , 1976: 74; Roux, 1980b: 36, 41, 53, pl. 3 (figs. 5–6); Roux et al. , 2002: 822. P. (Chambersaecrinus) brucei : Mironov & Sorokina, 1998: 52 –55, fig. 19–20, pl. 8 (figs. 4–5); Roux & Lambert, 2011: 45, 48, 51; Eléaume et al. , 2014: 210–211. P. (Chambersaecrinus) flexibilis Mironov & Sorokina, 1998: 55 –57, fig. 21, pl. 11 (fig. 2). Holotype. NMS 1921.143.1743, S. Y. Scotia , sta. 301, NW Weddell Sea, 64°48’S – 44°26’W, depth 4,585 m (2,485 fms). Material examined. NHM 1939.5.13.1 (paratype), S. Y. Scotia, trawl 3426, off South Orcade Islands, 62° 10’S, 41° 20’ W, depth 3,245 m (includes note by D. John in 1938: specimen was “broken into small species but among them some individual plates, radials, etc. are recognizable”.); USNM 1005433, South East Pacific basin, 63°0.3’to 63°12.0’S –128°12’ to 128°11’W, depth 4,682 m (2 specimens; 1 with theca, proximal arm and stalk; 1 juvenile with complete stalk, basal ring and fragments of proximal arms and radials); USNM 1005438, South Atlantic Ocean, Scotia Sea, South Georgia Island, 54°00’– 54°05’S, 33°40’– 33°43’W, depth 2663–2718 m (1, partly fragmented, theca poorly preserved, fragments of proximal arms with radials); USNM 1005439, South Atlantic, Scotia Sea, NE of South Shetland Islands, 59°S– 51.9°W, depth 3,010–3,510 m (1 theca, proximal arms and stalk fragments); USNM 1105453-A South Orkney Islands, Scotia Ridge, 62°09’ à 62°16’S –38°11’ à 38°24’W, depth 3,056–3,459 m (dissociated radials, basal ring, proximal brachials and proximalmost columnals). Emended diagnosis. A species of Ptilocrinus (Chambersaecrinus) reaching large size; proximalmost stalk diameter to 4.5 mm, arm length to 130 mm with about 40 pinnules on each side, and pinnule length to 55 mm. External morphology variable; ratio of cup height to adoral diameter ...