Denazinemys

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Denazinemys
Temporal range: Late Cretaceous, 74.56–73.04 Ma
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Pantestudines
Family: Baenidae
Clade: Baenodda
Genus: Denazinemys
Lucas and Sullivan, 2006
Species

D. nodosa (Gilmore, 1916)

Synonyms[1]

"Baena" nodosa Gilmore, 1916

Denazinemys was a genus of baenid turtle that lived in the Late Cretaceous of New Mexico. The holotype specimen, which D. nodosa was based on, USNM 8345, consists of a partial carapace and plastron. It came from the of the Kirtland Formation, and therefore, Denazinemys lived in the Kirtlandian land-vertebrate age. Many specimens other than the holotype have been assigned to Denazinemys.[1]

Distinguishing characteristics[]

Previously, was assigned to Denazinemys as D. ornata. Below are the features found in Denazinemys distinguishing the two genera:[1]

  • a carapace that is sub-triangular with widest dimension posteriorly;
  • prepleurals present and touching the first vertebrae medially;
  • the first vertebrae an irregular hexagonal shape with the greatest width posteriorly, contacting anterior second vertebrae;
  • extracervicals lateral to the primary cervicals, the cervicals being sub-divided;
  • and carapace nodes irregular and not forming distinct ridges.

Classification[]

Denazinemys is a baenid along with Plesiobaena, , Scabremys, and Chisternon.[1]

Below is a cladogram made by Sullivan et al. in 2013 showing the relations of Denazinemys: (note: Boremys pulchra is partly a junior synonym of Boremys grandis)[1]

Baenidae

hypothetical ancestor

Neurankylus eximius

Baenodda

Plesiobaena antiqua

Chisternon undatum

Denazinemys nodosa

References[]

  1. ^ a b c d e Sullivan, R.M.; Jasinski, S.E.; Lucas, S.G. (2013). "Re-Assessment of Late Campanian (Kirtlandian) Turtles from the Upper Cretaceous Fruitland and Kirtland Formations, San Juan Basin, New Mexico, USA" (PDF). In Brinkman, D.B.; et al. (eds.). Morphology and Evolution of Turtles. Vertebrate Paleobiology and Paleoanthropology. pp. 337–339. doi:10.1007/978-94-007-4309-0_20.
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