Skenea species [see Lee (2009: 58; species no. 268)] |
Scanning Electron Micrographs (SEM) |
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Kice Island, Collier County, Florida. SEMs produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL. |
Scanning Electron Micrograph |
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Sorted from drift taken at 16th Avenue S., Jacksonville Beach, Florida by Norma Bulock in 11/81 (0.68 mm.) - a rather worn specimen. Scanning electron micrograph performed under the auspices of the Dept. of Invertebrates of the United States National Museum with the excellent technical assistance of Ms. Yolanda Villacampa. |
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In shell grit taken by SCUBA from a depth of 69 feet off Boynton Beach, Palm Beach Co., FL. David Kirsh image. |
Delicate even spiral sculpture, more evident on the base, apparent
with high magnification. Operculum of specimen from Pinellas
Co. is thin, corneous, and multispiral. This is Lissospira
spec. indet. A (Odé 1987: 110), Ganesa (Lissospira)
sp. Gundersen (1998), and Lissospira sp. (Redfern, 2013:
22, no. 60.). As pointed out by W.
G. Lyons (in litt., 9/11/91), the systematic position of this
skeniform taxon
may be in the Turbinidae or Tornidae. This species is represented in the Lee Collection from Duval, St. Johns, Palm Beach, Monroe, Collier, Lee, Charlotte, Pinellas, and Levy Cos., FL as well as Sunset Beach, NC, Bahamas, Grenada, and Caribbean Colombia. The Pliocene Skenea smithfieldensis (Olsson, 1916) as treated by Campbell (1993: 57, pl. 25, figs. 246; see also Micromollusks of the Lower Pinecrest Beds, Upper Tamiami Formation, Sarasota County, Florida D3) is similar but appears to be proportionately taller and have a larger aperture.
Campbell, L. D., 1993. Pliocene
mollusks from the Yorktown and Chowan River Formations in
Virginia. Virginia Division of Mineral Resources
Publication 127: 1-259. Odé, H., 1987. Distribution and records of the marine Mollusca in the northwest Gulf of Mexico (A continuing monograph). 23(4): 110-121. July. [Skeneidae, etc.] <https://biodiversitylibrary.org/page/34823782>. Redfern, C., 2013. Bahamian Seashells: 1161 Species from Abaco, Bahamas. Bahamianseashells.com, Inc: Boca Raton, FL. (i)-viii + 1-501. |