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Showing results for tags 'piacenzian'.
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From the album: Gastropods of the Tamiami Formation
Order Trocida Family Calliostomidae Calliostoma willcoxianum Dall, 1892 Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: APAC, Sarasota County, Florida USA. Status: Extinct Notes: Incorrectly identified earlier in gallery as C. mitchelli pontoni. Reference Olsson, A.A., and A. Harbison. 1953 (1990 Reprint). Pliocene Mollusca of Southern Florida with Special Reference to Those from North Saint Petersburg, with special chapters on Turridae by W.G. Fargo and Vitinellidae and Fresh-water Mollusks by H.A. Pilsbry, The Academy of Natural Sciences of Philadelphia Monographs 8, The Shell Museum and Educational Foundation, 457 pages, 65 plates -
From the album: Gastropods of the Tamiami Formation
Order Trocida Family Calliostomidae Calliostoma mitchelli philanthropus (Conrad, 1834) Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: SMR Phase 10 Pit, Sarasota County, Florida USA. Status: Extinct Notes: This top shell displays quite a bit of variation. Conrad (1834) described both C. mithchelli and C. philanthropus. Later authors such as Dall (1892) and Mansfield (1930) placed several subspecies within C. philanthropus. Of 30 Calliostoma species/subspecies from the Upper Pliocene, Campbell (1993) recognized 19. Two stocks were dominate C. virginicum and C. mitchelli which took page precedence over C. philanthropus and which former subspecies are now named. -
Collected from a temporary construction site by Mike Bruggeman in the 1990s. Acquired by trade.
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- calliostomidae
- duplin
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Extinct Quahog. Geographically wide ranging in Upper Pliocene deposits from Zone 2 Yorktown in Virginia to Tamiami in South Florida. Campbell (1994) considered this a form of M. corrugata, separated by its thicker shell.
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Extinct Quahog. Commonly found within Bed 10 of the Pinecrest Member.
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Together with several small fungus gnats (Sciara strausi Kohring & Schlüter, 1993).
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Acquired in trade. Collected in the late 1990s.
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From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaeNaticarius castrenoides (Woodring, 1928)Location: Quality Aggregates (Pinecrest Sand Member), Sarasota County, Florida USA. Status: ExtinctNotes: Not as inflated as N. plicatella and the radial lines from the suture not as profound. Common within Caribbean Pliocene faunas. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaeNaticarius cf. canrena (Linnaeus, 1758)Location: Quality Aggregates (Pinecrest Sand Member), Sarasota County, Florida USA. Status: ExtantNotes: This immature and crabbed shell is most similar to the Colorful or Gaudy Moon Snail. Compare to recent N. canrena. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaePolinices caroliniana (Conrad, 1841)Location: APAC (Pinecrest Sand Member), Sarasota County, Florida USA. Status: ExtinctNotes: Glossy shell higher than wide with an open and distinctive umbilicus. Also found the Duplin Formation. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaeStigmaulax guppiana (Toula, 1909)Location: Quality Aggregates (Pinecrest Sand Member), Sarasota County, Florida USA. Status: ExtinctNotes: Distinct lines radiating from the suture to the umbilicus. A wide-spread species found in the Pliocene of the Caribbean and Central America. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaeStigmaulax polypum Olsson & Harbinson, 1953)Location: SMR Phase 10 (Pinecrest Sand Member), Sarasota County, Florida USA. Status: ExtinctNotes: Smaller and taller than S. guppiana. Faint lines radiating from the suture. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaeSigatica bathyora (Woodring, 1928)Location: APAC (Pinecrest Sand Member), Sarasota County, Florida USA. Status: ExtinctNotes: Distinctively shaped rare shell with large uncovered umbilicus. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaeDallitesta coensis (Dall, 1903)Location: Quality Aggregates (Pinecrest Sand Member), Sarasota County, Florida USA. Status: ExtinctNotes: Taller than wide. Well preserved shells are glossy with a partially covered umbilicus. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaeEuspra perspectiva (Rogers & Rogers, 1837)Location: Immokalee (Golden Gate Member), Collier County, Florida USA. Status: ExtinctNotes: Small shell, relatively high naticid with partially covered umbilicus. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaeNeverita duplicata (Say, 1822)Location: SMR Phase 10 (Pinecrest Member), Sarasota County, Florida USA. Status: ExtantNotes: Aka Common Atlantic Shark Eye. Compare to recent N. duplicate. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaeTectonatica pusilla (Say, 1822)Location: SMR Phase 8 (Pinecrest Sand Member), Sarasota County, Florida USA. Status: ExtinctNotes: Tiny shell with covered umbilicus. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaeSinum perspectivum (Say, 1831)Location: SMR Phase 10 (Pinecrest Member), Sarasota County, Florida USA. Status: ExtantNotes: Aka Common Baby Ear. Compare to modern examples of S. perspectivum. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily NaticidaeSinum polandi (M. Smith, 1936)Location: SMR Phase 10 (Pinecrest Member), Sarasota County, Florida USA. Status: ExtinctNotes: Similar to Sinum perspectivum but taller and more inflated. -
From the album: Gastropods of the Tamiami Formation
Order [unassigned] Caenogastropoda Family CerithiidaeCerithium preatratum Olsson & Harbinson, 1953Location: Bonita Grande Pit (Golden Gate Member), Lee County, Florida USA. Status: ExtinctNotes: This image of a better preserved specimen replaces MR 9440-1016 posted previously. -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily StrombidaeLobatus leidyi (Heilprin, 1886)Location: Bonita Grande Pit (Golden Gate Member), Lee County, Florida USA. Status: ExtinctNotes: A common species in the Lower Caloosahatchee Formation, it is also found in the Upper Pliocene Golden Gate Member of the Tamiami Formation. Compare to an excellently preserved specimen from the Caloosahatchee Formation. LINK -
From the album: Gastropods of the Tamiami Formation
Order LittorinimorphaFamily StrombidaeLobatus williamsi (Olsson & Petit, 1964)Location: Bonita Grande Pit (Golden Gate Member), Lee County, Florida USA. Status: ExtinctNotes: Large Strombid with a flaring aperture lip and locally abundant in the Golden Gate Member of the Tamiami Formation. Similar to pictured Lobatus cf. gigas but does not have strong development of shoulder nodes. -
Taxonomy from Fossilworks.org. Diagnosis from Gaudant 1997, p. 23 (translated from french by oilshale):"Perches that differ from the present species Perca fluviatilis L. by their sagitta possessing a relatively massive rostrum with a rounded anterior end, by the composition of the posterior dorsal fin which has 11 to 13 lepidotriches, whereas Perca fluviatilis L. generally has 13 to 16, and finally by the smaller size of their scales, the number of which can be estimated at about 65 to 80 along the lateral line, whereas it is 60 to 70 in Perca fluviatilis L." Identified by oilshale using Gaudant 1997. References: Weiler, W. (1933) Die Fischreste aus dem Oberpliocän von Willershausen. Arch. Hydrobiol. 25. p. 291-304. Gaudant, Jean (1997): L'ichthyofaune pliocène de Willershausen am Harz (Basse Saxe, Allemagne) – un réexamen. Stuttgarter Beiträge zur Naturkunde / B; 1997, 51 p.10 pl., 24 fig.
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From the album: Gastropods of the Tamiami Formation
Turritella pontoni Mansfield, 1931Location: APAC, Sarasota County, Florida USA.Notes: Deep suture. Similar to Turritella magnasulcus but with a stouter shell and straight sided later whorls. -
Niveria floridana was named by Olsson & Harbinson (1953). Although I did see someone synonymize this with the recent Niveria suffusa they did so without an explanation. N. floridana can be differentiated from N. suffusa by lacking the nodose ribs of the extant species. Reference Olsson, A.A., and A. Harbison. 1953 (1990 Reprint). Pliocene Mollusca of Southern Florida with Special Reference to Those from North Saint Petersburg, with special chapters on Turridae by W.G. Fargo and Vitinellidae and Fresh-water Mollusks by H.A. Pilsbry, The Academy of Natural Sciences of Philadelphia Monographs 8, The Shell Museum and Educational Foundation, 457 pages, 65 plates
