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Checked: verified by a taxonomic editorPerometrinae AH Clark, 1909 
AphiaID: 710753

Classification: Biota > Checked: verified by a taxonomic editorAnimalia (Kingdom) > Checked: verified by a taxonomic editorEchinodermata (Phylum) > Unreviewed: has not been verified by a taxonomic editorCrinozoa (Subphylum) > Unreviewed: has not been verified by a taxonomic editorCrinoidea (Class) > Checked: verified by a taxonomic editorArticulata (Subclass) > Checked: verified by a taxonomic editorComatulida (Order) > Checked: verified by a taxonomic editorComatulidina (Suborder) > Checked: verified by a taxonomic editorAntedonoidea (Superfamily) > Checked: verified by a taxonomic editorAntedonidae (Family)
Status accepted
Rank Subfamily
Parent Checked: verified by a taxonomic editorAntedonidae Norman, 1865
Source  original description Clark AH (1909) New genera and higher groups of unstalked crinoids. Proceedings of the Biological Society of Washington 22:173-178. [details]

Direct child
taxa (5)

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 Genus Checked: verified by a taxonomic editorErythrometra AH Clark, 1908
Genus Checked: verified by a taxonomic editorHelenametra AM Clark, 1966
Genus Checked: verified by a taxonomic editorHypalometra AH Clark, 1908
Genus Checked: verified by a taxonomic editorNanometra AH Clark, 1907
Genus Checked: verified by a taxonomic editorPerometra AH Clark, 1907
Environment marine
Note 
From editor or global species database
Checked: verified by a taxonomic editorDiagnosis Antedonidae with centrodorsal rounded conical; aboral polerounded, commonly rugose or tuberculate; cirrus-free portion broad or small. Cirrus sockets crowded, alternating in irregular circles, increasing in size toward base. Adoral side of centrodorsal smooth, without radial pits, interradial furrows, or ridges. Centrodorsal cavity 30-40% of centrodorsal diameter. Cirri rather long, with 25-55 cirrals; distal cirrals with aboral spine or process. Radials usually prominent, with exposed surface concave and projecting, to low and almost concealed midradially. Radial articular facet gently sloping, rather wide, separated by narrow interradial margin. Interarticular ligament fossae triangular, approximately as high as adoral muscle fossae. Ridge separating interarticular from muscle fossa narrow, commonly indistinct. Midradial ridge and notch usually low and wide. Radial cavity funnel shaped. Arms divided at primibrachial 2 and at secundibrachial 2 in some arms of Perometra afra. Primibrachial 1 low, commonly narrow and laterally overhung by proximal end of primibrachial 2. Synarthry between brachials 1-2 usually embayed. First pinnule stout, with <20 pinnulars. First interior and sometimes first exterior pinnule frequently absent. Second pinnule differs from genital pinnules. [details]
LSID urn:lsid:marinespecies.org:taxname:710753
Taxonomic
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Date   action   by
2012-11-18 00:57:34Z  created  Messing, Charles
  
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  Citation: Messing, C. (2014). Perometrinae AH Clark, 1909. In: Messing, C. (2014) World List of Crinoidea. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=710753 on 2014-09-17
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