Identifier: bulletinsofameri370pale (find matches)
Title: Bulletins of American paleontology
Year: 1895 (1890s)
Authors: Paleontological Research Institution (Ithaca, N.Y.) Columbia University
Subjects:
Publisher: Ithaca, N.Y., Paleontological Research Institution (etc.)
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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Shells up to 10 mm long, with strongconcentric ribbing, an acuminate posterior end, andtaxodont dentition. Comparison.âThe acuminate posterior and taxo-dont dentition separate this from Corbula swiftiana,above. The concentric ribbing and acuminate posteriorseparate it from Nucula proximo, described earlier. Name.âNuculana acuta (Conrad, 1832). Biofacies.âCharacteristic of the Gulf Biofacies andfairly common in Lucina samples. Uncommon to rarein all other faunas except for Rocky Shore, where itwas not recovered. References.âMorris. 1975, p. 4, pi. 9. fig. 19; Ab-bott, 1974. p. 414, fig. 4858; Emerson and Jacobson,1976, p. 342, pi. 37, fig. 2; Rehder. 1981, pp. 663-664, fig. 552; Abbott and Dance, 1983, p. 291, figured. SURFACE WITH RADIAL AND CONCENTRICORNAMENT EQUALLY DEVELOPED Chione cancellataText-figure 64A. B AMOCO Taxon #.â2171 Diagnosis.âSubtriangular shells up to 40 mm long.Flat radial ribs mark the entire surface and are crossed MoLLusK Shells in Florida Bay: Shaw
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Text-figure 64.âPelecypods with sheChionc floridaiuL D. E. Chione inuipurp â ea. F. G. Burhutui I and concentrvcilanu. H. Ar nient CLiually developed. A,aJumsi. I. J. Burhalia domin by fringe-like concentric lamellae. The radial ribscommonly develop a median groove in larger speci-mens, especially on the anterior part of the shell. Twoprominent cardinal teeth in the right valve and a singlein the left. Comparison.â^Chione fiondcma (Text-fig. 64C)is elongate rather than subtriangular and has moreclosely spaced concentric lamellae. See also C. inta-purpurea (Text-fig. 64D and E). discussed next. Name.âChione cancellata (Linnaeus, 1767). Biofacies.âA Dominant Taxon in the Gulf Biofa-cies and also abundant in Liicina samples. Common inboth Central Biofacies and in Tricolia assemblages.Has been found less commonly in all other biofaciesexcept Rocky Shore and Grecian Rocks, from whichit was not recovered. References.âWarmke and Abbott, 1961, p. 185, pi.38, fig. O; Morris, 1975, p

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