Fossils of this genus have been found in many places in the Indo-Pacific, but also going as far back as 61.7 Ma in
paleocene strata of
Alabama, USA.[3]
Original description
Although having the small smooth embryo of a single
whorl, polished surface and obsolete lines of growth, characterizing Pleurotoma (now Turris), this genus may be recognized at once by the relatively shorter and stouter form as a rule, less elongate and straighter beak, which is strongly tapering in certain large forms like line unedo, finer, more acutely elevated and less close-set spiral carinae, with a usually distinct and even, finely lineolate concavity from the peripheral carina to the suture or subsutural collar, the latter being generally present and by the deep anal sinus formed centrally on, and not behind, the peripheral carina, the latter being more strongly elevated and
usually subduplex.[4]
Kilburn, R.N. (1983) Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 1. Subfamily Turrinae. Annals of the Natal Museum, 25, 549–585
A. K. Dey. 1961. The Miocene Mollusca from Quilon, Kerala (India). Palaeontologica Indica 36
H. S. Ladd. 1982. Cenozoic fossil mollusks from Western Pacific Islands; Gastropods (Volutidae through Terebridae). United States Geological Survey Professional Paper 1171:1-100
F. S. MacNeil. 1960. Tertiary and Quaternary Gastropoda of Okinawa: A comparison of the late Miocene, Pliocene, and Pleistocene Gastropoda of Okinawa with related faunas of East Asia together with a resume of the geological setting of the fossiliferous deposits. United States Geological Survey Professional Paper 339:1-148
J. J. Sepkoski. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560
External links
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