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Diclonius perangulatus Cope, 1876, sp. nov

Main Author: Cope, E. D.
Format: info publication-taxonomictreatment Journal
Terbitan: , 1876
Subjects:
Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Dinosauria
Hadrosauridae
Diclonius
Diclonius perangulatus
Online Access: https://zenodo.org/record/4715976
ctrlnum 4715976
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format Other:info:eu-repo/semantics/other
Other
Other:publication-taxonomictreatment
Journal:Journal
Journal
author Cope, E. D.
title Diclonius perangulatus Cope, 1876, sp. nov
publishDate 1876
topic Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Dinosauria
Hadrosauridae
Diclonius
Diclonius perangulatus
url https://zenodo.org/record/4715976
contents Diclonius perangulatus, sp. nov. This abundant species of herbivorous dinosaur has left its shed teeth in many localities of the Fort Union horizon, in company with those of the Trachodon mirabilis, Palaeoscincus costatus, and other large reptiles. Teeth with complete apices are rare. The marked clharacter of the species is seen in the prominence of the medlian angular ridge which divides equally the cutting face of the crown from apex to base. The prominence increases downwards so that the transverse diameter becomes greater than the antero-posterior, in some cases being diamond-shaped in the transverse direction. Its position is symmetrical, or nearly so. The lateral borders are smooth,one specimen displaying a faint trace of crenation near the apex. There is no shank or root in any of the teeth preserved, and the basis is excavated on the side away from the cuttinlg edge for the apex of the successioinal tooth. A band of roughened cementum extends round the base, and is continued upwards on each side opposite the cutting face. This side presents three faces, a narrow mediain, and two wider lateral. The latter are slightly concave, and are probably adapted to the apices of the successional teeth; the former is often slightly concave, and is the seat of most rapid attrition. The lateral facets disappear at a distance below the apex, where the non-cutting side is strongly convex, and covered with a coarsely rugose cementum; the rugosity including pits. [table omitted] The prominence of the median angle with othier points distinguishes this species from the Cionodon arctatus. The size is larger than that of the known specimens of that species, equalling that of the largest of the order. ( See Report of U. S. Geological Surv. Terrs. II., 4to, for description of genus Cionodon. ) Specimens of this species have been referred by Dr. Leidy to his Trachodon mirabilis.
Published as part of Cope, E. D., 1876, Descriptions of some vertebrate remains from the Fort Union beds of Montana, pp. 248-261 in Proceedings of the Academy of Natural Sciences of Philadelphia 28 on pages 254-255, DOI: 10.5281/zenodo.3371111
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library Cognizance Journal of Multidisciplinary Studies
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collection Cognizance Journal of Multidisciplinary Studies
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subject_area Multidisciplinary
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first_indexed 2022-06-06T03:14:32Z
last_indexed 2022-06-06T03:14:32Z
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