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A TAXONOMIC REVIEW OF THE PACHYCEPHALOSAURIDAE (DINOSAURIA: ORNITHISCHIA)
The order “Pachycephalosauria” and the family Pachycephalosauridae are re-evaluated and determined to include the same taxa. They are thus of equal rank and redundant, so only the latter taxon isExpand
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Historical and Ecological Biogeography of Nearctic Pikas (Lagomorpha: Ochotonidae)
Allozymic patterns among populations of Ochotona princeps indicate a pre-Wisconsin (> 120,000 years ago) divergence of four major genetic units in the western United States (northern Rocky Mountains,Expand
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Eucoelophysis baldwini a new theropod dinosaur from the Upper Triassic of New Mexico, and the status of the original types of Coelophysis
ABSTRACT Eucoelophysis baldwini is a new genus and species of theropod dinosaur from the Upper Triassic Petrified Forest Formation of the Chinle Group in north-central New Mexico. EucoelophysisExpand
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THE KIRTLANDIAN LAND-VERTEBRATE "AGE"—FAUNAL COMPOSITION, TEMPORAL POSITION AND BIOSTRATIGRAPHIC CORRELATION IN THE NONMARINE UPPER CRETACEOUS OF WESTERN NORTH AMERICA
The Kirtlandian land-vertebrate “age” (LVA) is equivalent to 2.2 million years of Campanian time and fills a long-standing biochronologic gap between the Judithian and Edmontonian LVAs. TheExpand
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Late Triassic dinosaursfrom the western United States
Western North America has one of the most extensive fossil records of Late Triassic dinosaurs. AllUpper Triassic strata are assigned to the Chinle Group which yields four successive, dinosaur-bearingExpand
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RE-EVALUATION OF PENTACERATOPS AND CHASMOSAURUS (ORNITHISCHIA: CERATOPSIDAE) IN THE UPPER CRETACEOUS OF THE WESTERN INTERIOR
Pentaceratops sternbergii is an index fossil of the Kirtlandian LVA, and is known from the Fruitland and Kirtland formations, San Juan Basin, New Mexico and from the Williams Fork Formation ofExpand
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Re-Assessment of Late Campanian (Kirtlandian) Turtles from the Upper Cretaceous Fruitland and Kirtland Formations, San Juan Basin, New Mexico, USA
The fossil turtles from the Upper Cretaceous Fruitland and Kirtland formations (late Campanian; Kirtlandian) have been known for more than 100 years. We re-assess and revise these Late CretaceousExpand
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Nodocephalosaurus kirtlandensis, gen. et sp. nov., a new ankylosaurid dinosaur (Ornithischia: Ankylosauria) from the Upper Cretaceous Kirtland Formation (upper Campanian), San Juan Basin, New Mexico
ABSTRACT A partial skull of a new ankylosaurid dinosaur, Nodocephalosaurus kirtlandensis gen. et sp. nov., differs from known ankylosaurids in possessing a distinctive post-maxillary/lacrimalExpand
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The Phylogenetic Position of the Ornithischian Dinosaur Stenopelix valdensis from the Lower Cretaceous of Germany and the Early Fossil Record of Pachycephalosauria
The holotype of Stenopelix valdensis is the most completely known dinosaur specimen from the “Wealden” (Lower Cretaceous) of northwestern Germany, but its phylogenetic position has remained highlyExpand
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