Portalodus Long and Young, 1995
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publication ID |
https://doi.org/ 10.4202/app.2012.0101 |
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persistent identifier |
https://treatment.plazi.org/id/6B2D1521-EF6B-122E-FCED-12BDB1CD5B6E |
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treatment provided by |
Felipe |
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scientific name |
Portalodus Long and Young, 1995 |
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Genus Portalodus Long and Young, 1995
Type species: Portalodus bradshawae Long and Young, 1995 ; Aztec Siltstone , Middle Devonian (Givetian), Portal Mountains, southern Victoria Land, Antarctica .
Emended diagnosis.—Sharks with large diplodont teeth, devoid of intermediate cusps. Cusps divergent, twisted in different planes in occlusal view, and polarized. Labial surface smooth. Cusps almost rounded in cross-section, slightly compressed with cutting edges developed along mesial and marginal edge. Base with a prominent labial platform, and lacking a projection on lingual face and an articular structure. Underside of base simple, without well-defined ridges or transverse groove. At least one large nutritive foramen and rostrocaudal groove on ventral surface.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.