This genus includes ypsilothuriids with thecal plates made up of only a single layer of calcacerous material. ... [details]
This genus is well characterized by its rod-shaped spicules with two pairs of obliquely placed horizontal arms and ... [details]
Papillae inconspicuous, dark violet; pedicels not crowded, short, truncate, retractile into pockets; large wheels ... [details]
This more or less cosmopolitan genus is represented in southern Africa by Molpadia millardae, described as new to ... [details]
Total length up to 29 mm; tail up to one-third body length, often shorter. Colour dirty grey, anterior end (oral ... [details]
Cosmopolitan general distribution at 50-3,257 m. No previous southern African records (Thandar, 1999). [details]
Also distributed in Christiansund (Selenka, 1867). [details]
General distribution: South Orkney Island and trench, and the Atlantic Ocean (Thandar, 1999). [details]
Distribution: Atlantic Ocean, 1,316-3,678 m. (Thandar, 1999). Ecology: benthic, continental slope, abyssal, ... [details]
Distribution: Celebes Strait and west coast of South Africa, 1,301-3,255 m. (Thandar, 1999). [details]
Known from Japan, the Gulf of Mexico, and South-West Coast of Africa, 184-3,225 m. No previous southern African ... [details]
General distribution: almost cosmopolitan, but not yet known from the North Atlantic, 2,100-6,770 m. (Thandar, ... [details]
Possibly cosmopolitan, 375-3231 m. (Thandar, 1999). Habitat: green mud (Thandar, 1999). [details]
Holotype in South African Museum, Cape Town (South Africa) A22163; paratypes in South African Museum, Cape Town A27711 (3 ... [details]
Syntypes (probable) Indian Museum, Calcutta (India) (2 specimens). Type locality: off Sri Lanka (6°52'N 81°11'E) ... [details]
The genus: Molpadiodemas is treated as a synonym to Meseres. In family Gephyrothuriidae in Rowe & Gates (1995). ... [details]
Type species: Molpadia musculus Risso, 1826 by monotypy (not confirmed) (Rowe & Gates, 1995). [details]
Sphaerothuria talismani Deichmann, 1930 is a mis-identification of Ypsilothuria bitentaculata (Ludwig, 1893) ... [details]
Heding (1942) recognized only two species in this genus, namely Ypsilothuria talismani E. Perrier and Ypsilothuria ... [details]
Treated as a synonym of Himasthlephora glauca Clark, 1907 in Thandar (1999). In addition, treated as a synonym of ... [details]