Nomenclature
original description
(of Antedon alternata Carpenter, 1888) Carpenter, P. H. (1888). Report on the Crinoidea collected during the voyage of H.M.S. Challenger, during the years 1873-76. Part II. The Comatulae. <em>Reports of the Scientific Results of the Voyage of H.M.S. Challenger, Zoology.</em> 26 (part 60): i-x, 1-402, pl. 1-70., available online at http://www.19thcenturyscience.org/HMSC/HMSC-Reports/Zool-60/README.htm [details]
basis of record
Clark, A. H., Clark, A. M. (1967). A monograph of the existing crinoids. <em>Bulletin of the United States National Museum.</em> (82): 1-860. [details]
new combination reference
Clark, A. H. (1908). New genera of unstalked crinoids. <em>Proceedings of the Biological Society of Washington.</em> 21:125-136. [details]
Other
context source (Deepsea)
Intergovernmental Oceanographic Commission (IOC) of UNESCO. The Ocean Biogeographic Information System (OBIS), available online at http://www.iobis.org/ [details]
additional source
Mah, C.L.; McKnight, D.G.; Eagle, M.K.; Pawson, D.L.; Améziane, N.; Vance, D.J.; Baker, A.N.; Clark, H.E.S.; Davey, N. (2009). Phylum Echinodermata: sea stars, brittle stars, sea urchins, sea cucumbers, sea lilies. In: Gordon, D.P. (Ed.) (2009). New Zealand inventory of biodiversity: 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. pp. 371-400. [details]
From editor or global species database
Diagnosis Thaumatometra with cirri ~30, 7-8 mm long, of 12-16+ cirrals; longest cirrals with L/W ratio ~4 (median width); antepenultimate L/W ratio ~1.33; penultimate hardly, if at all, longer than broad. P1 of ~20 segments, with first 2-3 not longer than broad and following segments becoming very elongate with expanded and spiny joints. P2 probably shorter and may bear a gonad. Arms ~25 mm long. [details]
Distribution Near Kermadec Islands and NE of New Zealand. Depth range: 1,152-1,279 m. [details]Unreviewed
Habitat Known from seamounts and knolls [details]