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Topic: Dentaliida

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	The Scaphopod Page
		This division is based primarily on the constriction of the anterior aperture in the Gadilida and the shape of the central tooth of the radula (Emerson, 1962), although there are also several shell, radular and anatomical differences between the two groups, as enumerated by Scarabino (1979) and Steiner (1992b).
		The Dentaliida precede the Gadilida in the fossil record with the appearance of Rhytiodentalium kentuckyensis in the Ordovician; the first gadilid fossils date from the Permian (Pojeta and Runnegar, 1985).
		Chistikov presented a classification scheme of the Dentaliida which incorporated radular and soft-part anatomical characters from 10 of the 17 dentaliid genera.
	academics.hamilton.edu /biology/preynold/Scaphopoda (1121 words)

	Scaphopods (Site not responding. Last check: 2007-11-04)
		The characteristic molluscan gills, or ctenidia, are lacking, but the mantle cavity typically bears prominent ciliated ridges presumed to aid in respiration.
		The two scaphopod orders, the Dentaliida, and the Gadilida differ significantly in shell shape and soft-part morphology (Palmer 1974; Starobogatov, 1974; Steiner, 1992a; Shimek and Steiner, 1997).
		Generally, the Dentaliids have a longitudinally-ribbed or smooth "unpolished" shell which is largest at the anterior aperture.
	www.rshimek.com /Scaph1.htm (986 words)

	Palaeos Invertebrates: Mollusca: Scaphopoda (Site not responding. Last check: 2007-11-04)
		The Class Scaphopoda is divided into two orders, the Dentaliida and the Gadilida or Siphonodentalioida).
		The latter is distinguished by the constriction of the anterior aperture and the shape of the central tooth of the radula (Reynolds.
		The Dentaliida may or may not be paraphyletic, as the appear much earlier, so it is possible the Gadilida (which first appeared in the fossil record in the Permian) evolved from them.
	www.palaeos.com /Invertebrates/Molluscs/Scaphopoda (656 words)

	Scaphopods (Scaphopoda) (Site not responding. Last check: 2007-11-04)
		The scaphopods are the geologically youngest class of the molluscs.
		Division happens by the characteristic form of the anterior opening of the Gadilida and the characteristic form of the middle radula tooth.
		The Dentaliida geologically are older than the Gadilida, that do not appear until Permian.
	weichtiere.at /Mollusks/Andere/kahn.html (342 words)

	Encyclopedia: Mollusk (Site not responding. Last check: 2007-11-04)
		Orders Dentaliida Gadilida The tusk shells are a class Scaphopoda of marine mollusks distinguished by curved tubular shells open at both ends, resembling a elephants tusk (thus the name).
		Tusk shell Tusk Shell (bottom) Orders Dentaliida Gadilida The tusk shells are a class Scaphopoda of marine mollusks distinguished by curved tubular shells open at both ends, resembling a elephants tusk (thus the name).
		Orders A mussel is a bivalve mollusc that can be found in lakes, rivers, creeks, intertidal areas, and throughout the ocean.
	www.nationmaster.com /encyclopedia/Mollusk (2472 words)

	ADW: Scaphopoda: Information
		Many species in the Dentaliida burrow with the concave side just below the substrate.
		The Gadilida has a constriction on the anterior aperature and the central tooth of the radula is square or higher than wide.
		The Dentaliida have a conical foot, the shells are often ribbed, they may be small to large and the central tooth of the radula is wider than high.
	animaldiversity.ummz.umich.edu /mollusca/scaphopoda.html (923 words)

	A New Genus and Species of the Family Anulidentaliidae (Scaphopoda: Dentaliida) and its Systematic Implications -- ...
		A New Genus and Species of the Family Anulidentaliidae (Scaphopoda: Dentaliida) and its Systematic Implications -- Steiner 65 (2): 151 -- Journal of Molluscan Studies
		A New Genus and Species of the Family Anulidentaliidae (Scaphopoda: Dentaliida) and its Systematic Implications
		a basal grade of Gadilinidae and the remaining Dentaliida implying
	mollus.oupjournals.org /cgi/content/abstract/65/2/151 (139 words)

	McGraw-Hill AccessScience: Scaphopoda (Site not responding. Last check: 2007-11-04)
		The class is wholly marine; it is common and probably most diverse in the deep sea, and poorly represented in brackish, littoral, or estuarine habitats.
		Scaphopods are characterized by a tapering tubular shell with two apertures: the large ventral aperture that the foot extends out of and a small dorsal aperture.
		The tapering shells found in the Dentaliida give the class its common names tusk or tooth shells.
	dx.doi.org /10.1036/1097-8542.604500 (156 words)

	Kahnfüßer (Scaphopoda)
		Man geht daher davon aus, dass sich beide Gruppen sich anfänglich aus gemeinsamen bodenlebenden Vorfahren entwickelt haben, ihre Entwicklung aber später, vielleicht angepasst an die unterschiedliche Ernährungsweise, unterschiedliche Wege beschritten hat.
		Man unterscheidet heute zwei Ordnungen, Dentaliida und Gadilida, die sich u.a.
		Man geht davon aus, dass die Dentaliida die stammesgeschichtlich ältere Gruppe ist.
	www.weichtiere.at /scaphopoda/haupt.html (656 words)

	Scaphoda checklist
		Actualmente incluido en Dentaliidae [Children, 1834] (fide W.
		Introducido originalmente como subfamilia de Dentaliidae, para Dentalium, Antale, Entalis (ambos, Antalis), y Fustiaria (incluyendo Fustiaria y Laevidentalium)]
		Introducida como subfamilia de Dentaliidae, para Siphonodentalium, Gadila, Helonyx [Cadulus] y Pulsellum; actualmente se usa Gadilidae sensu Steiner (1992), equivalente a Siphonodentaliidae sensu Scarabino (1995), que incluye las subfamilias Siphonodentaliinae (Siphonodentalium, Sagamicadulus, Striocadulus, Polyschides y Dischides) y Gadilinae (Cadulus, Bathycadulus y Gadila)]
	www.eumed.net /malakos/Sis/SCAPHOPODA_sp.html (4724 words)

	Content of database E:\WWW_DA~1\PORTAL\ALL_TAXA.DBF (project "ZOOINT_R") - part 5 (Site not responding. Last check: 2007-11-04)
		Dentaliida * MOLLUSCA * Scaphopoda * * CNAMF * Dentaliida *
		Dentaliidae * MOLLUSCA * Scaphopoda * Dentaliidae * CNAMF * Dentaliidae *
		Antalis * MOLLUSCA * Scaphopoda * Dentaliidae * CNAMF * Antalis *
	www.zin.ru /projects/zooint_r/alltaxa5.htm (21127 words)

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