Ptilocrinus (Chambersaecrinus) brucei Vaney

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

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, 1980 b: 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 ...