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 More images | Distribution map | F 146229, 101772. Family - Ophiodermatidae. |
Description The disc is flat (arms inserted), 8 mm diameter. The radial shields are covered. The dorsal surface is covered by plates, bearing spines/granules, with a visible diameter of 0.25–0.4 mm, overlapping; primary plates not visible. Disc spines or granules of one type, cylindrical. The spines are up to 0.05–0.1 mm long, and 0.8–1.2 times high as wide; densely distributed. The ventral interradial surface is plated. The oral shields are exposed, circular or triangular, as long as wide. The adoral shields are covered in granules. Bursal slits reduced or extend from the oral shield to the disc margin, not bordered by spines or papillae. The jaw is as wide as long or wider than long, with one or two, pointed or tapering apical papilla or rounded apical papilla, longer than wide or as wide as long. Oral papillae are present along each jaw angle in a series, rounded or quadrangular (irregular block shapes). The oral tentacle pore is located inside the jaw, with distal oral papilla enlarged, and quadrangular. The specimen has five arms, unbranched, moniliform, 5–8 times d.d. Dorsal arm plates, contiguous, with spines/granules, clustered on the basal dorsal arm plates; quadrangular, and 0.3–0.6 times long as wide. The second ventral arm plates are contiguous with the third plate, rounded or fan-shaped, notched or concave laterally, and 0.6–0.85 times long as wide. Ventral arm plates of the first free segments contiguous, oval or quadrangular, and 0.7–0.85 times long as wide. Tentacle pores along the arm, with one scale or two scales, covering the pore, quadrangular or oval. There are 2–3 arm spines on the first ventral segment, 8–9 on the first free segments. The spines are adpressed to arm, extending laterally, subequal or longest ventrally, and 0.25–0.75 times as long as one arm segment, blunt, flattened.
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 |