Xiphodolamia ensis (Leidy, 1877)
publication ID |
https://doi.org/10.11646/zootaxa.5646.4.3 |
publication LSID |
lsid:zoobank.org:pub:816A3D35-45D9-417F-8E0B-065EED0831AC |
persistent identifier |
https://treatment.plazi.org/id/177D87CE-FF9F-FFEA-3883-F987FB02F803 |
treatment provided by |
Plazi |
scientific name |
Xiphodolamia ensis |
status |
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The fossil teeth of Xiphodolamia ensis are characterised by the absence of lateral cusplets and a well-defined transverse groove. The tooth cervix appears as a fine line on both the labial and lingual views. Similar to X. eoceana , the basal ledge in X. ensis is positioned lower, with short transverse ridges visible on the labial side.
The tooth exhibits an orthodont structure, with a thin enameloid layer featuring folds on the labial surface of the dentin constituting approximately 1/1236 of the total tooth length. The enameloid layer is approximately 1/12 the thickness of the pallial dentin. A large pulp cavity runs axially through the tooth, with the enameloid making up about 1/1236 of the total tooth length, the pallial dentin accounting for 1/99, and the orthodentin roughly 1/9 of the overall length. The pallial dentin layer is rigid and lacks porosity, while the orthodentin contains numerous large dentinal tubules, which are not organised in a specific pattern. The pulp cavity is distinctly thicker than the dentinal tubules. The osteodentin in the root is rigid and displays a homogeneous structure ( Fig. 8C, 8D View FIGURE 8 ).
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.