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THE OSTEOLOGY OF MASIAKASAURUS KNOPFLERI, A SMALL ABELISAUROID (DINOSAURIA: THEROPODA) FROM THE LATE CRETACEOUS OF MADAGASCAR
Abstract We describe the osteology of the new small theropod dinosaur Masiakasaurus knopfleri, from the Late Cretaceous Maevarano Formation of northwestern Madagascar. Approximately 40% of the…
CRANIOFACIAL ANATOMY OF MAJUNGASAURUS CRENATISSIMUS (THEROPODA: ABELISAURIDAE) FROM THE LATE CRETACEOUS OF MADAGASCAR
Abstract Recent fieldwork in the Upper Cretaceous (Maastrichtian) Maevarano Formation, northwest Madagascar, has yielded important new skull material of the abelisaurid theropod, Majungasaurus…
The phylogeny of Tetanurae (Dinosauria: Theropoda)
An exhaustive examination of all basal tetanurans and all existing character data, taking advantage of recent discoveries and adding new morphological, temporal and geographic data achieved significantly improved phylogenetic resolution.
The Phylogeny of Ceratosauria (Dinosauria: Theropoda)
A new cladistic analysis of Ceratosauria from the Late Jurassic‐Late Cretaceous of North and South America, Europe, Africa, India and Madagascar suggests that Elaphrosaurus and its relatives are the most basal ceratosaurs, followed by Ceratosaurus and Noasauridae + Abelisauridae (= Abelisauroidea).
New Horned Dinosaurs from Utah Provide Evidence for Intracontinental Dinosaur Endemism
Two new, co-occurring ceratopsids from the Upper Cretaceous Kaiparowits Formation of Utah are described that provide the strongest support to date for the dinosaur provincialism hypothesis and further suggest the presence of latitudinally arrayed evolutionary centers of endemism within chasmosaurine cer atopsids during the late Campanian.
Craniofacial ontogeny in centrosaurine dinosaurs (Ornithischia: Ceratopsidae): taxonomic and behavioral implications
An important implication arising directly from this study is that juvenile and sub-adult centrosaurines are difficult to distinguish taxonomically at the specific level.
The Kaiparowits Formation: a remarkable record of late Cretaceous terrestrial environments, ecosystems, and evolution in western North America
[Extract] Updated Sedimentological and paleontological data support earlier assertions that the Kaiparowits Formation was deposited in a wet alluvial to coastal plain setting with an abundance of…
"The Late Cretaceous Vertebrate Fauna of Madagascar: Implications for Gondwanan Paleobiogeography."
Madagascar continued on p. 2 Vol. 9, No. 8 August 1999
Two new horned dinosaurs from the upper Cretaceous Two Medicine Formation of Montana; with a phylogenetic analysis of the Centrosaurinae (Ornithischia: Ceratopsidae)
- Scott D. Sampson
- 27 December 1995
Two new ceratopsid dinosaurs, Einiosaurus procurvicornis and Achelousaurus horneri, are described from the Two Medicine Formation of Montana and suggest an increased rate of evolution that may correlate with the late Campanian transgression of the Bearpaw Sea.
NEW INFORMATION ON SEGISAURUS HALLI, A SMALL THEROPOD DINOSAUR FROM THE EARLY JURASSIC OF ARIZONA
Abstract Here we redescribe the holotype and only specimen of Segisaurus halli, a small Early Jurassic dinosaur and the only theropod known from the Navajo Sandstone. Our study highlights several…