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Table 3 in Description of two species of the genus Astrodia Verrill, 1899 (Ophiuroidea, Euryalida, Asteronychidae), including a new species from seamounts in the West Pacific

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Zenodo2022-10-04 更新2026-04-07 收录
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Table 3. Comparison of key morphological characters among species in the genus Astrodia. SpeciesArm spinesGenital slitsExternal ossiclesLateral arm plates on middle to distal portion of armsOral papillaeReferenceAstrodia abyssicola (Lyman, 1879)0-2very short, ~1/5 (height of disc)plate-shaped on peripheryshapes: crescent; projections: absentdomed granule-shapedLyman (1879), Okanishi and Fujita (2014), This studyAstrodia excavata (Lütken & Mortensen, 1899)0-3large, ~2/3 (height of disc)granule-shaped near radial shields and genital slitsshapes: bar-like; projections: presentdomed granule-shapedLütken and Mortensen (1899), Okanishi and Fujita (2014)Astrodia plana (Lütken & Mortensen, 1899)0-3short, ~1/4 (height of disc)absentshapes: oblong; projections: absentdomed granule-shapedLütken and Mortensen (1899), Döderlein (1927), Okanishi and Fujita (2014)Astrodia tenuispina (Verrill, 1884)0-3, occasionally 4short, ~1/2 (height of disc)plate-shaped on periphery, granule-shaped in centershapes: unknown; projections: absentdomed granule-shaped, small and shortVerrill (1884), Koehler (1906), Koehler (1922), Baker (1980), Gage et al. (1983), Manso (2010), Okanishi and Fujita (2014)Astrodia duospina sp. nov.0-2, occasionally 3short, ~1/4 (height of disc)plate-shaped on periphery and in centershapes: crescent; projections: absentindistinct or underdevelopedThis study

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