|
|
| TITLE: | New skull material of Osteodontornis orri (Aves: Pelagornithidae) from the Miocene of California
| | AUTHOR: | Thomas A. Stidham
| | JOURNAL: | PaleoBios
| | PUBLISHED: | Sep 15, 2004
| | NOTES: | 24(2)
| | ABSTRACT: | New material of the bony-toothed bird Osteodontornis orri from the middle Miocene Round Mountain Silt on Sharktooth Hill, Kern County, California clarifies the identification of some Asian Osteodontornis material and provides previously unreported morphological details of the rostrum of Osteodontornis and pelagornithids. This material is approximately the same age as the O. orri holotype and some of the referred Osteodontornis material from California, and is younger than the Osteodontornis material from Japan. The Sharktooth Hill specimens have some morphological characters in common with specimens from Japan (e.g., neurovascular groove on the medial surface of the dentary), and the new specimens differ somewhat morphometrically from the older and penecontemporaneous material. The new material supports the assignation of the Japanese material to O. orri, and suggests that O. orri either had greater variation in size among individuals than currently is recognized or possibly underwent size change over its geologic history.
| | COLLECTION: | PaleoBios Archive Public
| | ID: | 233
|
YOU CAN VIEW THIS DOCUMENT IN THE FOLLOWING WAYS:
PDF
(from the DocuBase repository)
|
