Amphiura

Amphiura filiformis, copyright Judith Oakley.

Belongs within: Gnathophiuridea.

Amphiura is a cosmopolitan genus of brittle stars with the central disc covered by fine scales.

Characters (from Spencer & Wright 1966): Oral papillae not forming continuous row along jaw, having single infradental separated by gap from single outer papilla with internal one invisible above gap. Disc with fine, flat, imbricating scales. Tentacle scales 2.

<==Amphiura Forbes 1843 [incl. Hemilepis Ljungman 1871]SW66
    |--*A. chiajei Forbes 1843TS16
    |--A. abbreviata Koehler 1905SM15
    |--A. ambigua Koehler 1905SM15
    |--A. belgicaeBK77
    |--A. bidentata Clark 1938SM15
    |--A. borealisBK77
    |--A. brachyactis Clark 1938SM15
    |--A. catephes Clark 1938 [incl. A. phrixa]SM15
    |--A. constricta Lyman 1879SM15
    |--A. dolia Clark 1938MG-H11
    |--A. filiformisBK77
    |--A. fragilisBK77
    |--A. griegiBK77
    |--A. leptotata Clark 1915MG-H11
    |--A. leucaspis Clark 1938SM15
    |--A. magellanicaUB72
    |--A. mediterraneaBK77
    |--A. microplaxBK77
    |--A. microsoma Clark 1915SM15
    |--A. octacantha (Clark 1915)MG-H11
    |--A. roseusHS01
    |--A. securigeraBK77
    |--A. stictacantha Clark 1938SM15
    |--A. tenuis (Clark 1938)SM15
    `--A. velox Koehler 1910SM15

*Type species of generic name indicated

References

[BK77] Barel, C. D. N., & P. G. N. Kramers. 1977. A survey of the echinoderm associates of the north-east Atlantic area. Zoologische Verhandelingen 156: 1–159.

[HS01] Hayward, B. W., A. B. Stephenson, M. S. Morley, W. M. Blom, H. R. Grenfell, F. J. Brook, J. L. Riley, F. Thompson & J. J. Hayward. 2001. Marine biota of Parengarenga Harbour, Northland, New Zealand. Records of the Auckland Museum 37: 45–80.

[MG-H11] McEnnulty, F. R., K. L. Gowlett-Holmes, A. Williams, F. Althaus, J. Fromont, G. C. B. Poore, T. D. O’Hara, L. Marsh, P. Kott, S. Slack-Smith, P. Alderslade & M. V. Kitahara. 2011. The deepwater megabenthic invertebrates on the western continental margin of Australia (100–1100 m depths): composition, distribution and novelty. Records of the Western Australian Museum Supplement 80: 1–191.

[SM15] Sampey, A., & L. M. Marsh. 2015. Kimberley marine biota. Historical data: echinoderms. Records of the Western Australian Museum Supplement 84: 207–246.

[SW66] Spencer, W. K., & C. W. Wright. 1966. Asterozoans. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt U. Echinodermata 3 vol. 1 pp. U4–U107. The Geological Society of America, Inc., and The University of Kansas Press.

[TS16] Thuy, B., & S. Stöhr. 2016. A new morphological phylogeny of the Ophiuroidea (Echinodermata) accords with molecular evidence and renders microfossils accessible for cladistics. PLoS One 11 (5): e0156140.

[UB72] Uttley, G. H., & J. S. Bullivant. 1972. Biological results of the Chatham Islands 1954 expedition. Part 7: Bryozoa Cheilostomata. New Zealand Department of Scientific and Industrial Research Bulletin 139: 1–61.

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