Diagnostic Features |
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Distribution | Recent; Antarctica. |
Name gender | masculine |
Type | Sterechinus antarcticus Koehler, 1901, by original designation. |
Species Included |
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Classification and/or Status |
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Remarks | Differs from Echinus in having a hemicyclic apical disc with a proportionally much larger periproct, and in having plates much more densely covered in granulation. In life this provides the animal with a dense, hair-like felt in amongst the rather fine primary spines. Confined today to the circum-Antarctic region. Very similar to Selenechinus which differs primarily in that its globiferous pedicellariae have a single lateral tooth. In terms of test characters the two are almost identical save that Sterechinus has a much larger periproct in comparison to the size of its apical disc than Selenechinus. Koehler, A. 1900 (December). Bulletin de l'Academie Belgique (3) 38, p. 815. |