WoRMS taxon details

Psathyrometra bigradata (Hartlaub, 1895)

430559  (urn:lsid:marinespecies.org:taxname:430559)

accepted
Species
marine, brackish, fresh, terrestrial
(ofAntedon bigradata Hartlaub, 1895) Hartlaub C. (1895). Reports on the dredging operations off the west coast of Central America to the Galapagos, to the west coast of Mexico, and to the Gulf of California, charge of Alexander Agassiz, carried on by the U.S. Fish Commission steamer "Albatross," during 1891, Lieut.-Commander Z. L. Tanner, U. S. N., commanding. Die Comatuliden. Bulletin of the Museum of Comparative Anatomy, Harvard. 27(4):129-152, pls. 1-4. [details]   
Distribution Galapagos Is. and (possibly) Gulf of Panama.
Depth range : 484-740 m (possibly to 1016 m)
  
Distribution Galapagos Is. and (possibly) Gulf of Panama.
Depth range : 484-740 m (possibly to 1016 m)
 [details]

description A species of Psathyrometra with centrodorsal H/D 0.80-0.84; cirrus sockets separated interradially by narrow flat strip;...  
description A species of Psathyrometra with centrodorsal H/D 0.80-0.84; cirrus sockets separated interradially by narrow flat strip; interradial ridges absent. Distal end of oral margin of middle and mid-distal cirrals finely denticulate, straight or convex in oral view; penultimate cirral longer than wide, tapered, with opposing spine absent in fully developed cirri of large specimens. Axil and br2 with proximolateral margins gently concave to almost straight, with tuft of spines at tips of synarthrial tubercles. Proximal brachials with alternating articular tubercles weak or absent. Distal midaboral margins of middle and distal brachials spinose.
 [details]
Messing, C. (2018). World List of Crinoidea. Psathyrometra bigradata (Hartlaub, 1895). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=430559 on 2018-06-18
Date
action
by
2009-11-16 06:52:30Z
created

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original description  (ofAntedon bigradata Hartlaub, 1895) Hartlaub C. (1895). Reports on the dredging operations off the west coast of Central America to the Galapagos, to the west coast of Mexico, and to the Gulf of California, charge of Alexander Agassiz, carried on by the U.S. Fish Commission steamer "Albatross," during 1891, Lieut.-Commander Z. L. Tanner, U. S. N., commanding. Die Comatuliden. Bulletin of the Museum of Comparative Anatomy, Harvard. 27(4):129-152, pls. 1-4. [details]   

basis of record Messing CG, White CM (2001). A revision of the Zenometridae (new rank)(Echinodermata, Crinoidea, Comatulidina). Zoologica Scripta 30(3):159-180 [details]   

additional source Clark AH, Clark AM (1967) A monograph of the existing crinoids 1(5). Bulletin of the United States National Museum (82):1-860. [details]   

source of synonymy Clark AH. (1907). New genera of recent free crinoids. Smithsonian Miscellaneous Collection. Quarterly Issue, 50(3):343-364. (look up in IMIS[details]   

additional source  (ofAntedon bigradata Hartlaub, 1895) Messing CG, White CM (2001). A revision of the Zenometridae (new rank)(Echinodermata, Crinoidea, Comatulidina). Zoologica Scripta 30(3):159-180 [details]   

basis of record  (ofAntedon bigradata Hartlaub, 1895) Clark AH, Clark AM (1967) A monograph of the existing crinoids 1(5). Bulletin of the United States National Museum (82):1-860. [details]   

context source (Deepsea) Intergovernmental Oceanographic Commission (IOC) of UNESCO. The Ocean Biogeographic Information System (OBIS), available online at http://www.iobis.org/ [details]   
 
 Present  Inaccurate  Introduced: alien  Type locality 
From editor or global species database
Distribution Galapagos Is. and (possibly) Gulf of Panama.
Depth range : 484-740 m (possibly to 1016 m)
 [details]

description A species of Psathyrometra with centrodorsal H/D 0.80-0.84; cirrus sockets separated interradially by narrow flat strip; interradial ridges absent. Distal end of oral margin of middle and mid-distal cirrals finely denticulate, straight or convex in oral view; penultimate cirral longer than wide, tapered, with opposing spine absent in fully developed cirri of large specimens. Axil and br2 with proximolateral margins gently concave to almost straight, with tuft of spines at tips of synarthrial tubercles. Proximal brachials with alternating articular tubercles weak or absent. Distal midaboral margins of middle and distal brachials spinose.
 [details]