Paracomitas rodgersi explained

Paracomitas rodgersi is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.[1]

Description

The length of the shell attains 27 mm.

(Original description) The shell is of medium size and inflation. The whorls are nearly straight sided, interrupted mainly by the nodose peripheral carina. The protoconch is small, subnaticoidal and tilted. The aperture is moderately narrow, about half the length of the shell. The outer lip is thin, broken on the specimens at hand, but shown by growth lines to recurve sharply into the anal sinus. The anal sinus is moderately broad and deep, adjacent to the suture, thegrowth lines recurving only slightly from the apex of the sinus to the suture. The sculpture consists of short axial nodes on the periphery, about ten of the peripheral nodes visible from an angle. The lower part of the body whorl and the columella bear weak raised spirals which are wider near the periphery, narrower and nearly obsolete on the columella. The peripheral nodes are crossed by both the spiral sculpture and diagonal lines of growth. The subsutural slope is smooth and flat except for lines of growth marking former positions of the anal sinus, and the small tubercles or wrinkles just below the suture on the juvenile whorls.[2]

A.W.B. Powell (1969) doubted if this species belonged to Paracomitas [3]

Distribution

This extinct marine species is endemic to Okinawa and was found in Pliocene strata

Notes and References

  1. http://www.bagniliggia.it/WMSD/HtmSpecies/2115513110.htm World Mollusc Species Data Base: Paracomitas rodgersi
  2. MacNeil . F.S. . Tertiary and Quaternary Gastropoda of Okinawa . U. S. Geological Survey Professional Paper. . 1961 . 339 . 1-148 . 27 June 2024.
  3. https://books.google.com/books?id=t6bGnbhf3pQC&dq=%22Paracomitas+rodgersi%22&pg=RA5-PA14 USGS Professional paper 1170-A (1981)