The length of the shell attains 8 mm, its diameter 2.5 mm.
(Original description by Bartsch) The shell is elongate-conic, white or cream-yellow. The protoconch contains 2½ whorls, well rounded and smooth. The 5 teleoconch whorls are strongly rounded. They are provided with decidedly sinuous, strong, protractively slanting, almost sublamellar, axial ribs, of which 14 occur upon the first three and 12 upon the remaining whorls. These ribs are about one-third as wide as the spaces which separate them. In addition to the ribs, the whorls are marked by narrow, deeply incised, spiral sulci, which are about one-third as wide as the flat spaces that separate them. The increase in these sulci from the early whorls to the later takes place by the intercalation of new sulci in the flat spaces, which usually begin as fine incised striations. Of these sulci 6 occur upon the first, 10 upon the second, 17 upon the third, 14 upon the fourth, and 19 upon the penultimate whorl. The periphery of the body whorl is well rounded. The base of the shell is protracted, marked by the strong continuations of the axial ribs, which become evanescent at the insertion of the columella, and 23 incised spiral sulci, which are a little more distantly spaced on the columella than on the posterior half of the base. The aperture is decidedly channeled anteriorly, posteriorly with a strong notch immediately below the suture.[2]
Distributionedit
This marine species occurs at Simon's Bay, South Africa.
^P. Bartsch (1915), Report on the Turton collection of South African marine mollusks, with additional notes on other South African shells contained in the United States National Museum; Bulletin of the United States National Museum v. 91 (1915) This article incorporates text from this source, which is in the public domain.
External linksedit
Shells of Guraleus amplexus
Wikimedia Commons has media related to Guraleus amplexus.
Tucker, J.K. 2004 Catalog of recent and fossil turrids (Mollusca: Gastropoda). Zootaxa 682:1–1295.
Hedley, C. 1922. A revision of the Australian Turridae. Records of the Australian Museum 13(6): 213–359, pls 42–56
April 13, 2024
guraleus, amplexus, species, snail, marine, gastropod, mollusk, family, mangeliidae, shell, scientific, classificationdomain, eukaryotakingdom, animaliaphylum, molluscaclass, gastropodasubclass, caenogastropodaorder, neogastropodasuperfamily, conoideafamily, m. Guraleus amplexus is a species of sea snail a marine gastropod mollusk in the family Mangeliidae 1 Guraleus amplexusShell of Guraleus amplexusScientific classificationDomain EukaryotaKingdom AnimaliaPhylum MolluscaClass GastropodaSubclass CaenogastropodaOrder NeogastropodaSuperfamily ConoideaFamily MangeliidaeGenus GuraleusSpecies G amplexusBinomial nameGuraleus amplexus A A Gould 1860 Synonyms 1 Anacithara amplexa Gould 1860 Clathurella amplexa Gould 1860 original combination Cythara amplexa Gould 1860 Defrancia amplexa Gould 1860 Haedropleura thea Thiele J 1925 Mangelia rietensis Turton 1932 Mangilia amplexa Gould 1860 Mangilia humerosa Bartsch P 1915 Mangilia rietensis Turton W H 1932 Contents 1 Description 2 Distribution 3 References 4 External linksDescription editThe length of the shell attains 8 mm its diameter 2 5 mm Original description by Bartsch The shell is elongate conic white or cream yellow The protoconch contains 2 whorls well rounded and smooth The 5 teleoconch whorls are strongly rounded They are provided with decidedly sinuous strong protractively slanting almost sublamellar axial ribs of which 14 occur upon the first three and 12 upon the remaining whorls These ribs are about one third as wide as the spaces which separate them In addition to the ribs the whorls are marked by narrow deeply incised spiral sulci which are about one third as wide as the flat spaces that separate them The increase in these sulci from the early whorls to the later takes place by the intercalation of new sulci in the flat spaces which usually begin as fine incised striations Of these sulci 6 occur upon the first 10 upon the second 17 upon the third 14 upon the fourth and 19 upon the penultimate whorl The periphery of the body whorl is well rounded The base of the shell is protracted marked by the strong continuations of the axial ribs which become evanescent at the insertion of the columella and 23 incised spiral sulci which are a little more distantly spaced on the columella than on the posterior half of the base The aperture is decidedly channeled anteriorly posteriorly with a strong notch immediately below the suture 2 Distribution editThis marine species occurs at Simon s Bay South Africa References edit a b Gofas S 2010 Guraleus amplexus In MolluscaBase 2017 Accessed through World Register of Marine Species at http www marinespecies org aphia php p taxdetails amp id 556040 on 2017 07 06 P Bartsch 1915 Report on the Turton collection of South African marine mollusks with additional notes on other South African shells contained in the United States National Museum Bulletin of the United States National Museum v 91 1915 nbsp This article incorporates text from this source which is in the public domain External links edit nbsp Shells of Guraleus amplexus nbsp Wikimedia Commons has media related to Guraleus amplexus Tucker J K 2004 Catalog of recent and fossil turrids Mollusca Gastropoda Zootaxa 682 1 1295 Hedley C 1922 A revision of the Australian Turridae Records of the Australian Museum 13 6 213 359 pls 42 56 Retrieved from https en wikipedia org w index php title Guraleus amplexus amp oldid 1193393053, wikipedia, wiki, book, books, library,
