Seymouria
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- The Arroyo Formation (Leonardian: Lower Permian) and Its Vertebrate Fossils
- Early Permian Vertebrate Assemblage and Its Biostratigraphic Significance, Arroyo Del Agua, Rio Arriba County, New Mexico Spencer G
- A Global Hiatus in the Middle Permian Tetrapod Fossil Record
- Variation in Articular Cartilage Thickness Among Extant Salamanders and Implications for Limb Function in Stem Tetrapods
- Early Permian Vertebrates from the Cutler Formation of the Placerville Area Colorado
- The Postcranial Skeleton of the Family Limnoscelidae and Its Taxonomic Implications for Understanding Basal Amniotes
- Parsimony-Based Test for Identifying Changes In
- Early Permian Vertebrate Assemblage and Its Biostratigraphic Significance, Arroyo Del Agua, Rio Arriba County, New Mexico
- Reevaluation of the Largest Published Morphological Data Matrix
- Lithostratigraphy,Paleontology,Biostratigraphy, AndAgeOfTheUpperPaleozoicAboFormationNear JemezSprings,NorthernNewMexico,Usa