| Osteology and relationships of Byronosaurus jaffei (Theropoda, Troodontidae). American Museum novitates ; no. 3402 (2003) | |||||||||||||||
|
|||||||||||||||
Abstract | |||||||||||||||
| P I D H E A S O U H O CENTRAL PARK WEST STREET NEW YORK Number figures table March Osteology and Relationships Byronosaurus jaffei Theropoda Troodontidae PETER MAKOVICKY MARK NORELL JAMES CLARK AND TIMOTHY ROWE ABSTRACT The troodontid Byronosaurus jaffei known from two specimens from adjacent localities the Nemegt basin Omnogov Aimag Mongolia These specimens are composed well preserved cranial material and fragmentary postcrania All these elements are described here Byronosaurus jaffei included comprehensive phylogenetic analysis Coelurosauria ascertain its relationships Several interesting characters Byronosaurus jaffei have implications both for theropod relationships and for understanding patterns variation within coelurosaurian theropods These include the position foramen that marks the exit the supra alveolar canal which suggest homologous with the subnarial foramen the flattened internarial bar the unusual interfenestral bar and the unserrated teeth Additionally the well preserved braincase allows detailed comparison with other troodontid taxa INTRODUCTION The remains troodontid dinosaurs are extremely rare and only nine taxa have been described most from Central Asia Osmol ska and Barsbold Russell and Dong Here provide detailed description Byronosaurus jaffei troodontid Assistant Curator Department Geology The Field Museum Roosevelt Lake Shore Drive Chicago Research Associate Division Paleontology American Museum Natural History mail pmakovicky fieldmuseum org Chairman. Includes bibliographical references (p. 28-30).. "The troodontid Byronosaurus jaffei is known from two specimens from adjacent localities in the Nemegt basin, Omnögov Aimag, Mongolia. These specimens are composed of well-preserved cranial material and fragmentary postcrania. All of these elements are described here. Byronosaurus jaffei is included in a comprehensive phylogenetic analysis of Coelurosauria to ascertain its relationships. Several interesting characters of Byronosaurus jaffei have implications both for theropod relationships and for understanding patterns of variation within coelurosaurian theropods. These include the position of a foramen that marks the exit of the supra-alveolar canal (which we suggest is homologous with the subnarial foramen), the flattened internarial bar, the unusual interfenestral bar, and the unserrated teeth. Additionally, the well-preserved braincase allows detailed comparison with other troodontid taxa"--P. [1]. | |||||||||||||||
Publication details | |||||||||||||||
| |||||||||||||||
Publications citing this publication (1) | |||||||||||||||
| |||||||||||||||
Cited publications (5) | |||||||||||||||
| |||||||||||||||