. Bulletins der amerikanischen Paläontologie. Fossile Lep/cythaka im tropischen Amerika: Jung 13. allx 5 Text - Abbildung 6. âLepicyihara hasilissa (Gardner). USNM 351224. Holotypus. USGS-Station 3742. Shell Bluff, Shoal River. Walton County. Florida. Shoal River Formation. Höhe 9,8 mm Breite 3,8 mm. 1. Ansicht von vorne; 2, Ansicht von hinten; 3. an der rechten Seite. Der shaip Rand des äußeren Hp. Columellar Kallus dünn bis mäßig ausgeprägt. Parietale Kallus normalerweise incon-spicuous, selten verdickte in der Nähe von Sinus. Vordere Kanal gerade oder leicht nach links, in der Regel naiTOw verdreht, und mäßig lang. Erläuterungen. âAs n

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. Bulletins of American paleontology. Fossil Lep/cythaka in Tropical America: Jung 13. allx5 Text-figure 6.âLepicyihara hasilissa (Gardner). USNM 351224. Holotype. USGS Station 3742. Shell Bluff, Shoal River. Walton County. Florida. Shoal River Formation. Height 9.8 mm. width 3.8 mm. 1. front view; 2, rear view; 3. from right side. the shaip edge of the outer Hp. Columellar callus thin to moderately prominent. Parietal callus usually incon- spicuous, rarely thickened near sinus. Anterior canal straight or slightly twisted to the left, usually naiTOw, and short to moderately long. Remarks.âAs now known the genus Lepicythani consists of 22 species, ten of which are not named or are identified by means of open nomenclature only. Its occurrence is restricted to tropical America and Florida and its total stratigraphic range is late Early Miocene to Pleistocene. Lepicythara basilissa (Gaidnei. 1937) Text-figures 6-9 â â Cythara" hasilissa Gardner. 1937. p. 344. pi. 42. f 23-24. Description.âOf small size, slender. Protoconch consists of 3.25 volutions; surface of its first 2.5 vo- lutions smooth, the remainder sculptured by up to 15 opisthocyrt axial riblets. Number of teleoconch whorls up to 4.5, their profile slightly convex on early whorls as well as on late whorls. Teleoconch whorls sculp- tured by opisthocline to slightly sigmoid axial ribs; their number per whorl is seven to eight on early whorls and seven to nine on late whorls. Interspaces of axial ribs slightly concave, smooth except for sig- moid growth lines or weakly sculptured by incised spi- ral lines on the abapical part of the whorl. The crests of the axial ribs on spire whorls are crossed by a grad- ually increasing number of incised spiral lines. On the body whorl these incised spiral lines are present on the whole surface including the interspaces of the axial ribs but excluding a narrow zone on the interspaces, which adjoins the suture. Suture not deep. Aperature narrow. Outer lip thickened.

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• bookauthorpaleonto
• bookcentury1800
• bookdecade1890
• bookyear1895