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Taxon profile

species

Actinotrophon actinophorus W. H. Dall, 1889

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Muricidae - Muricids »  genus Actinotrophon

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Actinotrophon actinophorus

Author: Bayer, F.M.

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Interchangeable taxa

Although the radula is similar to that of species of Trophon, it also resembles that of Typhis and, as in that genus, has an accessory semicircular chitinous jawlike structure that survives treatment with KOH. Most significantly, the radula of "Trophon" actinophorus is almost indistinguishable from that of Murex (Paziella) pazi Crosse, which also has the jawlike structure as in Typhis but without a central cluster of denticles. As the shell of "Trophon" actinophorus is muricoid rather than trophonoid and, indeed, differs from M. (Paziella) pazi chiefly by the absence of spines around the base of the body whorl and by the thin outer lip which apparently does not develop denticles even in large examples, the species is here considered in the subgenus Paziella. The relationship of Paziella and Poirieria cannot be discussed at this time, but the two certainly are very close (see Yokes, 1964).
Bayer, F.M. 1971, New and unusual mollusks collected by R/V JOHN ELLIOTT PILLSBURY and R/V GERDA in the tropical western Atlantic.

Distribution

Originally described from BLAKE stations off St. Croix, Martinique, and Barbados, the range of this species was extended southward to the mouth of the Amazon River by Bullis (1964). The illustrated specimens from Sta. P-984, the larger of which is 27.8 mm in length, confirm Dalls suspicion that his specimen 17.5 mm in length was immature.
Bayer, F.M. 1971, New and unusual mollusks collected by R/V JOHN ELLIOTT PILLSBURY and R/V GERDA in the tropical western Atlantic.
Author: Jan Delsing

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