Chondraster grandis Verrill 1878

• Main Authors: Mah, Christopher L., Foltz, David W.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Asteroidea; Valvatida; Poraniidae; Chondraster; Chondraster grandis; Northeast Atlantic; Norwegian Sea
• Online Access: https://doi.org/10.5281/zenodo.6133825; http://treatment.plazi.org/id/039F453C95518724FF0BFEFEFC44F8E5

Chondraster grandis (Verrill 1878) Porania grandis Verrill 1878: 371; 1882: 218; 1884: 652; 1885: 542 (pt.), pl. 15, fig. 44, pl. 16, fig. 44a (non figs 45, 45a= Porania pulvillus insignis) (possible synonym) Tylaster willei Danielssen & Koren 1881: 186; 1884: 64; Ludwig 1900: 459; Ostergren 1901: 252; Grieg 1907: 32; Djakonov 1933: 44; 1950: 60 (1968: 51); A.M. Clark 1993: 238. ? Marginaster fimbriatus Sladen 1889: 365, pl. 58, figs. 4–6. ? Cheilaster fimbriatus Bell 1893: 81 Porania (Chondraster) grandis Verrill 1895: 137 Culcita borealis (pt.) Farran 1913: 15 (st. SR 483) [Non-C. borealis Süssbach & Breckner 1911] Chondraster grandis A.M. Clark 1984: 27, figs. 4A, B, 5A, 6A, B, 7d; Harvey et al. 1988: 163; Clark & Downey 1992: 203. Occurrence. Off Cape Cod (c. 42º) S to SE of Cape May(c. 38º), Lydonia Canyon (south side of George’s Bank), Baltimore Canyon, SE of Cape Mayin the NW Atlantic. Bear Seamount . Lousy Bank, SW of the Faeroe Islands, Rockall Trough, Porcupine Seabight, and the Wyville Thomson Ridge south to the southern Bay of Biscay (c. 44ºN, 4ºW). 300–2490 m Other Notes : This species has been observed in situ in several Northeast Atlantic localities by Remotely Operated Vehicles deployed by the Okeanos Explorer (pers. observations). Video observations of this species are recorded from Heezen, Hydrographer, and Nygren canyons where it has been observed on soft-sediment covered substrates in conjunction with octocorals and encrusting colonial invertebrates. It displays a purple/pink-white color in life. Synonymy of C. grandis with Tylaster willei ? Tylaster willei Danielssen and Koren 1881 has been seldom recorded since its original description, and in spite of its occurrence in the Norwegian Sea and adjacent regions it is conspicuously absent from Clark and Downey’s (1992) comprehensive monograph of Atlantic asteroids. Subsequent accounts [e.g., Djakonov 1950 (1968)] have done little to elaborate on the poorly understood description of this species. A review of the original description ...