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Structure and function of hindlimb feathers in Archaeopteryx lithographica
Abstract This study examines the morphology and function of hindlimb plumage in Archaeopteryx lithographica. Feathers cover the legs of the Berlin specimen, extending from the cranial surface of theExpand
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A microraptorine (Dinosauria–Dromaeosauridae) from the Late Cretaceous of North America
The fossil assemblages of the Late Cretaceous of North America are dominated by large-bodied dinosaur species. Associated skeletons of small dinosaurs are exceedingly rare, and small (<10 kg)Expand
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Caenagnathidae from the Upper Campanian Aguja Formation of West Texas, and a Revision of the Caenagnathinae
ABSTRACT Caenagnathid theropods are a relatively common part of the theropod fauna in the Late Cretaceous of Asia and North America, but have not previously been described from the southernmostExpand
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A transitional snake from the Late Cretaceous period of North America
Snakes are the most diverse group of lizards, but their origins and early evolution remain poorly understood owing to a lack of transitional forms. Several major issues remain outstanding, such asExpand
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A new oviraptorid (Dinosauria: Theropoda) from the Upper Cretaceous of Bayan Mandahu, Inner Mongolia
:  A new oviraptorid is described on the basis of a partial forelimb collected from the Upper Cretaceous redbeds of Bayan Mandahu, Inner Mongolia. Machairasaurus leptonychus, gen. et sp. nov. isExpand
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A new, large ornithomimid from the cretaceous dinosaur park formation of Alberta, Canada:Implications for the study of dissociated dinosaur remains
Abstract:  Only two ornithomimid genera, Ornithomimus and Struthiomimus, are currently known from the Upper Cretaceous of North America. However, a number of ornithomimid elements from Alberta’sExpand
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Mass extinction of birds at the Cretaceous–Paleogene (K–Pg) boundary
The effect of the Cretaceous-Paleogene (K-Pg) (formerly Cretaceous–Tertiary, K–T) mass extinction on avian evolution is debated, primarily because of the poor fossil record of Late Cretaceous birds.Expand
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The horned dinosaurs Pentaceratops and Kosmoceratops from the upper Campanian of Alberta and implications for dinosaur biogeography
Abstract The upper Campanian of the American Southwest has produced dinosaurs that are unknown from the northern Great Plains and vice versa. This has led to the idea that North America's CampanianExpand
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Mass extinction of lizards and snakes at the Cretaceous–Paleogene boundary
The Cretaceous–Paleogene (K-Pg) boundary is marked by a major mass extinction, yet this event is thought to have had little effect on the diversity of lizards and snakes (Squamata). A revision ofExpand
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Cranial Ontogeny in Stegoceras validum (Dinosauria: Pachycephalosauria): A Quantitative Model of Pachycephalosaur Dome Growth and Variation
Historically, studies of pachycephalosaurs have recognized plesiomorphically flat-headed taxa and apomorphically domed taxa. More recently, it has been suggested that the expression of theExpand
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