WoRMS taxon details
Thalassometridae AH Clark, 1908
AphiaID: 123152
AphiaID: 123152
| Classification: Biota > Animalia (Kingdom) > Echinodermata (Phylum) > Crinozoa (Subphylum) > Crinoidea (Class) > Articulata (Subclass) > Comatulida (Order) > Comatulidina (Suborder) > Tropiometroidea (Superfamily) |
| Status | accepted | ||||||||||||||||
| Record status | Checked by Taxonomic Editor | ||||||||||||||||
| Rank | Family | ||||||||||||||||
| Parent | Tropiometroidea | ||||||||||||||||
| Sources |
original description: Clark AH (1908) New genera of unstalked crinoids. Proceedings of the Biological Society of Washington 21:125-136. [details] basis of record: Clark AH (1950) A monograph of the existing crinoids. 1(4c). Bulletin of the U.S. National Museum 82:1-383, 32 pls. [details] additional source: Hess H, Messing CG, Ausich WI (2011) Treatise on Invertebrate Paleontology, Part T, Echinodermata 2 Revised, Crinoidea vol. 3. University of Kansas Press, Lawrence, Kansas. [details] additional source: Mortensen, Th. (1977). Handbook of the echinoderms of the British Isles. Reprinted ed. W. Backhuys: Rotterdam, The Netherlands. ISBN 90-6279-004-6. ix, 471 pp. (look up in IMIS) [details] additional source: Hansson, H.G. (2001). Echinodermata, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 336-351 (look up in IMIS) [details] | ||||||||||||||||
| Direct child taxa [show all] | Genus Aglaometra AH Clark, 1913 Genus Cosmiometra AH Clark, 1909 Genus Crotalometra AH Clark, 1909 Genus Daidalometra AH Clark, 1916 Genus Horaeometra Genus Koehlermetra AH Clark, 1950 Genus Leilametra AH Clark, 1932 Genus Lissometra AH Clark, 1918 Genus Oceanometra AH Clark, 1916 Genus Parametra AH Clark, 1909 Genus Stenometra AH Clark, 1909 Genus Stiremetra AH Clark, 1909 Genus Stylometra AH Clark, 1908 Genus Thalassometra AH Clark, 1907 Subfamily Charitometrinae AH Clark, 1909 accepted as Charitometridae AH Clark, 1909 | ||||||||||||||||
| Environment | marine, | ||||||||||||||||
| Links | To GenBank To ITIS | ||||||||||||||||
| Notes |
Diagnosis: Tropiometroidea with centrodorsal ranging from discoidal through hemispherical and conical to columnar; cirrus-free aboral apex, rounded or flattened, rugose, tuberculate or spiny. No dorsal star or radial pits. Cirrus sockets large, without distinct ornament or with articular tubercles, in 10 or 15 columns of 1-4 sockets. Cirri long, slender with 30-90 cirrals (except 18-27 in Parametra). Distal cirrals short, with prominent aboral processes or spines (except in Leilametra). Rod-shaped basals present. Subradial cleft may be present. Radials with short exposed surface or concealed; articular facet moderately sloping, more or less angularly bent. Muscle fossae steep, tall and narrow, separated from interarticular ligament by diagonal ridge. Radial cavity narrow. As many as 30 arms. Secundibrachials of 2 or 4 ossicles, the latter with syzygy between brachials 3 and 4. Synarthry between brachials 1 and 2; syzygy between brachials 3-4 (between brachials 2-3 following distalmost axil in Koehlermetra). Further syzygial interval variable. Brachials aborally rounded or laterally compressed and with aboral ridge or spines, commonly with marginal spines. First pinnule longer and stouter than second. Some proximal pinnulars may be enlarged; pinnulars covering gonad broadened in Horaeometra. Pinnules with distinct ambulacral covering plates. [details] Remark: Placement of family in Ordo follows NODC Taxonomic Codes [details] | ||||||||||||||||
| LSID | urn:lsid:marinespecies.org:taxname:123152 | ||||||||||||||||
| Taxonomic Edit history |
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| Citation: Messing, C.; Hansson, H. (2013). Thalassometridae. In: Messing, C. (2013) World List of Crinoidea. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=123152 on 2013-05-20 | |||||||||||||||||
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