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Anonymous: Unedited TaxonConcept data | ||||||
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Species Glyptoxoceras sp. | ||||||
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Diagnosis / Definition: | ||||||
Kennedy (1986): Description. The specimen is a fragment only, 14•5 mmlong with maximum whorl height of5 mm. Whorl seetion compressed oval (Wb:Wh = 0,8) with rib index 3•O~3•5. Ribs coarse and distant, strongly prorsiradiate on flanks, passing straight across venter but flexed forwards and convex on dorsum. Sutures not seen. |
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Discussion / Comments: | ||||||
Kennedy (1986): Discussion. This enigmatic, straight, coarse1y ribbed fragment is referred to Glyptoxoceras by comparison with coarse-ribbed species such as G. largesulcatum (Forbes, 1846a). It could conceivably be a Phylloptychoceras Spath, 1953, but those specimens of this genus I have studied are ornamented by broad bulges rather than the c1early differentiated ribs of the present form. Glyptoxoceras species occur in the Upper Maastrichtian ofKunraed in the Maastricht area, and the present occurrence is not unexpected. |
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Systematics: | ||||||
39 Ordo Ammonoidea Subordo Ancyloceratina Familia Diplomoceratidae Subfamilia Diplomoceratinae Genus Glyptoxoceras Species Glyptoxoceras sp. |
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Synonym list: | ||||||
Kennedy (1986): 1986 Glyptoxoceras sp. . - Kennedy : p.50
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References: | ||||||
Kennedy,W.J.. (1986): |
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Anonymous: Unedited TaxonConcept data | ||||||
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Taxon relations
Ranking (experimental) |