Fissidentalium carduus (Dall, 1889)
yellow tuskshell
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Family:  Dentaliidae ()
Max. size:  8.9 cm SHL (male/unsexed)
Environment:  benthic; marine; depth range 60 - 600 m
Distribution:  Western Atlantic: USA to Uruguay, Caribbean.
Diagnosis:  Shell is long, slightly curved, regularly tapering, yellowish grey. Six primary ribs, secondary ribs present, attaining rapidly similar size of primary ones, transverse riblets present producing a rasp-like surface. Apex with a deep, narrow slit at the convex side. Oral section polygonal, circular or slightly dorsoventrally compressed (Ref. 3441).
Biology:  Empty shells collected from depths of 40 to 1980 m (Ref. 3441). Minimum depth from Ref. 111279. Members of the class Scaphopoda are gonochoric. Fertilization occurs in the mantle cavity. Life cycle: Eggs hatch into free-swimming lecithotrophic trochophore larvae, succeeded by shelled veligers (Ref. 833).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (120744)
Threat to humans: 
Country info:   

Entered by: Conejar - Espedido, Jeniffer - 11.12.05
Modified by: Polido, Rubyann Robelle - 21.09.16

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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