A new turtle from the Arundel Clay facies (Potomac Formation, Early Cretaceous) of Maryland, U.S.A.
- 12 June 2006
- journal article
- Published by Taylor & Francis in Journal of Vertebrate Paleontology
- Vol. 26 (2), 300-307
- https://doi.org/10.1671/0272-4634(2006)26[300:antfta]2.0.co;2
Abstract
A new paracryptodiran turtle, Arundelemys dardeni, gen. et sp. nov., is described on the basis of an isolated, nearly complete skull from the Early Cretaceous Arundel Clay facies of Maryland, USA. The basicranial region exhibits the paracryptodiran condition of a single foramen for the canalis caroticus internus located midway along the basisphenoid. As revealed by CT scans, the basicranial region of Arundelemys is unusual in that the right and left canales carotici interni merge just before reaching the sella turcica and the canalis caroticus lateralis is very small or absent. A phylogenetic analysis places Arundelemys dardeni as the basal-most member of the Paracryptodira. Within the Paracryptodira, Arundelemys dardeni is most similar to Compsemys victa in general proportions.Keywords
This publication has 13 references indexed in Scilit:
- DEVELOPING A PROTOCOL FOR THE CONVERSION OF RANK-BASED TAXON NAMES TO PHYLOGENETICALLY DEFINED CLADE NAMES, AS EXEMPLIFIED BY TURTLESJournal of Paleontology, 2004
- Late Cretaceous and early Paleocene turtles of the Denver Basin, ColoradoRocky Mountain Geology, 2003
- Anatomy and systematics ofPlesiobaena antiqua(Testudines; Baenidae) from the mid-Campanian Judith River Group of Alberta, CanadaJournal of Vertebrate Paleontology, 2003
- New material ofDinochelys whiteiGaffney, 1979, from the Dry Mesa Quarry (Morrison Formation, Jurassic) of ColoradoJournal of Vertebrate Paleontology, 2000
- First Early Cretaceous mammal from the eastern seaboard of the United StatesJournal of Vertebrate Paleontology, 1999
- The most ancient African turtleNature, 1994
- Ordosemys leios, n.gen., n.sp., a new turtle from the Early Cretaceous of the Ordos Basin, Inner MongoliaCanadian Journal of Earth Sciences, 1993
- The skull ofNeurankylus eximius(Testudines: Baenidae) and a reinterpretation of the relationships of this taxonJournal of Vertebrate Paleontology, 1993
- Revised palynological correlations of the lower Potomac group (USA) and the cocobeach sequence of Gabon (Barremian-Aptian)Cretaceous Research, 1992
- Anatomy and relationships of the turtleBoremys pulchra(Testudines: Baenidae)Journal of Vertebrate Paleontology, 1991