WoRMS taxon details

Calometridae AH Clark, 1911

246668  (urn:lsid:marinespecies.org:taxname:246668)

Genus Calometra AH Clark, 1907
Genus Gephyrometra AH Clark, 1912
Genus Neometra AH Clark, 1912
Genus Pectinometra AH Clark, 1912
Genus Reometra AH Clark, 1934

Genus Oreometra AH Clark, 1912 accepted as Reometra AH Clark, 1934 (preoccupied by Oreometra Aurivillius, 1910 (Lepidoptera: Geometridae))
marine, brackish, fresh, terrestrial
Clark, A. H. (1911). The systematic position of the crinoid genus <i>Marsupites</i>. <i>Proceedings of the U.S. National Museum</i> 40:649–654. [details]   
WoRMS (2023). Calometridae AH Clark, 1911. Accessed at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=246668 on 2023-02-09
2007-10-10 10:48:29Z
2011-02-23 10:48:32Z
2012-10-25 20:39:55Z

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original description Clark, A. H. (1911). The systematic position of the crinoid genus <i>Marsupites</i>. <i>Proceedings of the U.S. National Museum</i> 40:649–654. [details]   

basis of record Clark, A. H. (1947) A monograph of the existing crinoids. 1(4b). <i>Bulletin of the United States National Museum</i> 82:1-473, 43 pls. [details]   
 Present  Inaccurate  Introduced: alien  Containing type locality 
From editor or global species database
Diagnosis Tropiometroidea with centrodorsal discoidal to low hemispherical with broad, flattened, cirrus-free aboral apex. No radial pits or subradial cleft. Aboral star present only in fossil Kiimetra miocenica. Large cirrus sockets without distinct sculpturing, crowded in 1-2 (rarely 3) irregular rows, commonly corresponding to 15-20 short, irregular columns. Cirrals short; distal cirrals with aboral ridge or spine. Tip of rod-shaped basals exposed interradially or concealed. Radials exposed or concealed, commonly with lateral margins visible and separating adjacent primibrachials. Radial articular facet crescent shaped, steep and wide, with muscle fossae reduced to thin, curved bands. Radial cavity very wide. Arms 10-40. Brachitaxes of 2 ossicles (except 4 in Reometra). Synarthry between brachials 1-2; syzygy between brachials 3-4 and more distally at intervals of 2-7. First pinnule delicate and weak but with first 2 segments enormously enlarged; following pinnules elongate, enlarged, stiffened, and composed of elongate pinnulars. Pinnules with distinct ambulacral covering plates. Disk globose, covered with a pavement of plates, and easily detached. [details]
Japanese ユウビウミシダ科  [details]