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Topic: Bellerophontida

	Palaeos Metazoa: Mollusca: Gastropoda: Tergomya: Bellerophontida
		The Bellerophontida (traditionally Bellerophontina) are a fairly important group of Paleozoic mollusk fossils, characterized by a distinctive planospiral, symmetrically coiled shell, rather like a tiny nautiloid but without septa.
		In the other extreme were extreme convolute genera of the families Euphemitidae and Bellerophontidae that lack umbilici and in which only the body whorl is visible from the exterior.
		It is now pretty certain that as previously considered the Bellerophontida are a polyphyletic assemblage, including both gastropod (torted) and non-gastropod (untorted) forms.
	www.palaeos.com /Invertebrates/Molluscs/Gastropoda/Tergomya/Bellerophontida.html (2484 words)

	Bellerophon (mollusc) - Wikipedia, the free encyclopedia
		Bellerophon is a genus of extinct, mostly Paleozoic snail-like mollusc of the order Bellerophontida.
		It is characterised by a globose, convolute, planispiral (symmetrically coiled) shell, which resembles a miniature cephalopod (e.g.
		Although usually classified as a primitive gastropod, there is a minority view that the Bellerophontida actually represented a more primitive, untorted type (see Torsion) that evolved a spiral shell independently.
	en.wikipedia.org /wiki/Bellerophon_(mollusc) (330 words)

	Palaeos Metazoa: Taxa
		Cyrtonella: X (Mollusca: Gastropoda: Tergomya: Bellerophontida), see "Bellerophontiforms".
		Knightites: X (Mollusca: Gastropoda: Tergomya: Bellerophontida), see "Bellerophontiforms".
		Tremanotus: X (Mollusca: Gastropoda: Tergomya: Bellerophontida), see "Bellerophontiforms".
	www.palaeos.com /Invertebrates/Lists/Taxa.html (176 words)

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