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 More images | Distribution map | F 80906. Family - Ophiuridae. |
Description The disc is tumid (arms inserted), interradial edge petaloid (some petaloid), 7 mm diameter. The radial shields are covered or triangular with rounded corners, contiguous distally, divergent proximally, with 1 plates between them; 0.9–1.1 times long as wide, and length 0.2 times d.d. The dorsal surface is covered by plates, bearing spines/granules, with a visible diameter of 0.7–1.3 mm, overlapping or touching; primary plates visible. Disc spines or granules of one type, dome-shaped. The spines are up to 0.1–0.4 mm long, and 0.75–1.25 times high as wide; restricted to regions of the disc (mainly outer edges, hapahazardly through the middle). The ventral interradial surface is plated. The oral shields are exposed, pentagonal (square pointed proximally), as long as wide. The adoral shields are exposed, proximal to lateral edge of oral shield or extending to lateral edge of oral shield, separated radially, meeting interradially. Bursal slits reduced, not bordered by spines or papillae. The jaw is as wide as long, with one, pointed or tapering apical papilla, as wide as long. Oral papillae are present along each jaw angle in a series, quadrangular. The oral tentacle pore is located inside the jaw, with distal oral papilla enlarged, and quadrangular. The specimen has five arms, unbranched, basally constricted, 2–3 times d.d. No dorsal plate present - lateral plates surround arm. The second ventral arm plates are no ventral arm plate - lateral plates surround arm. Ventral arm plates of the first free segments no ventral arm plate. Tentacle pores absent. There are 1 arm spines on the first ventral segment, 3–5 on the first free segments. The spines are adpressed to arm, extending laterally, subequal, and 0.1–0.25 times as long as one arm segment, pointed or blunt, cylindrical.
Description exported from Delta key and to be finalised when DNA sampling completed. Note species description and image characters may vary slightly in animals of different size within the same species. Cite this publication as: "T O'Hara
(2010). ‘Ophiuroids from deep sea southern Australia. Museum Victoria. Version:
1.0 http://www.museumvictoria.com.au/stars" MUSEUMVICTORIA |