TY - JOUR
T1 - A new turtle from the Arundel Clay facies (Potomac Formation, Early Cretaceous) of Maryland, U.S.A
AU - Lipka, Thomas R.
AU - Therrien, François
AU - Weishampel, David B.
AU - Jamniczky, Heather A.
AU - Joyce, Walter G.
AU - Colbert, Mathew W.
AU - Brinkman, Donald B.
N1 - Funding Information:
ACKNOWLEDGMENTS The authors thank Mr. Tom Darden, former owner of the Hotton Locality, for his generosity and ongoing support of field research. TRL would also like to thank Jeff Magee and Don Agee, former quarry managers of the site for their direct support and help and for their assistance during field activities. Thanks are also due to Dale Shelton, Jerry Baum, Ken Schwartz, and John Glaser (all of the Maryland Geological Survey), Rich Cife-lli, Cindy Gordon, Kyle Davies, Mike Brett-Surman, Bob Purdy, Tracy Ford, Gene Gaffney, Ken Rose, Shawn Zack, Paul DeAn-gelis, Forbes Maner, and many others for their assistance and support of this work. TRL also wishes to thank his wife, Anna, for her support and patience while her husband is prying the secrets out of the Arundel Clay. We also thank Gene Gaffney (AMNH) for his assistance in completing the preparation of the specimen and for passing the specimen on to the junior author (DBB) for description. Useful comments regarding this manuscript were provided by Gene Gaffney and Jim Parham. This work was funded in part by an NSF/REU grant DEB-9870173 and the Bryan Patterson Award of the Society of Vertebrate Paleontology (both to TRL).
PY - 2006/6/12
Y1 - 2006/6/12
N2 - 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.
AB - 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.
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U2 - 10.1671/0272-4634(2006)26[300:ANTFTA]2.0.CO;2
DO - 10.1671/0272-4634(2006)26[300:ANTFTA]2.0.CO;2
M3 - Article
AN - SCOPUS:33745620754
SN - 0272-4634
VL - 26
SP - 300
EP - 307
JO - Journal of Vertebrate Paleontology
JF - Journal of Vertebrate Paleontology
IS - 2
ER -