Classification and Evolution of Ornithopod Dinosaurs
Abstract
ALTHOUGH I agree with the main themes of Thulborn on the origin of ornithischian dinosaurs1-3, I disagree4-6 with the current classification of the family Hypsilophodontidae7-8, in respect to premaxillary teeth as a diagnostic feature, cheeks, cheek teeth and locomotor capabilities.
- Publication:
-
Nature
- Pub Date:
- October 1972
- DOI:
- 10.1038/239464a0
- Bibcode:
- 1972Natur.239..464G