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A Late Triassic Dinosauromorph Assemblage from New Mexico and the Rise of Dinosaurs
The transition between the first dinosaurs and more archaic faunas may have extended for 15 to 20 million years and was probably diachronous at different paleolatitudes.
Taxonomic classification of the reef coral family Mussidae (Cnidaria: Anthozoa: Scleractinia)
The present monograph introduces the higher-level classification system for the 46 genera whose relationships are clear and formally revise the taxonomy of those corals belonging to the newly discovered family-level clade (restricted today to the western Atlantic and Caribbean regions).
A Complete Skeleton of a Late Triassic Saurischian and the Early Evolution of Dinosaurs
- S. Nesbitt, N. Smith, R. Irmis, A. Turner, Alex Downs, M. Norell
- Environmental Science, GeographyScience
- 11 December 2009
A new theropod dinosaur from New Mexico is a representative of the early North American diversification and reveals a mosaic of plesiomorphic and derived features that clarify early saurischian dinosaur evolution and provide evidence for the antiquity of novel avian character systems including skeletal pneumaticity.
Osteology of Cryolophosaurus ellioti (Dinosauria: Theropoda) from the Early Jurassic of Antarctica and implications for early theropod evolution
An in-depth morphological description of Cryolophosaurus is pre-sented here, along with a rigorous phylogenetic analysis of theropod relationships consisting of 347 characters and 56 taxa, in an attempt to clarify the relationships of Crylophosaurus and to provide insight into questions sur-rounding early theropid evolution.
Best Practices for Justifying Fossil Calibrations
A specimen-based protocol for selecting and documenting relevant fossils is presented and future directions for evaluating and utilizing phylogenetic and temporal data from the fossil record are discussed, to establish the best practices for justifying fossils used for the temporal calibration of molecular phylogenies.
Hindlimb Osteology and Distribution of Basal Dinosauromorphs from the Late Triassic of North America
An ontogenetic series of the femur of Dromomeron indicates that some character states previously used in phylogenetic analyses of early dinosaurs may be ontogenetically variable.
Phylogenetic Analysis of Pelecaniformes (Aves) Based on Osteological Data: Implications for Waterbird Phylogeny and Fossil Calibration Studies
- N. Smith
- BiologyPloS one
- 14 October 2010
Relationships of extant pelecaniforms inferred from morphology are more congruent with molecular phylogenies than previously assumed, though notable conflicts remain.
A longirostrine tyrannosauroid from the Early Cretaceous of China
- Da-Qing Li, M. Norell, K. Gao, N. Smith, P. Makovicky
- Geography, Environmental ScienceProceedings of the Royal Society B: Biological…
- 22 January 2010
The fossil record of tyrannosauroid theropods is marked by a substantial temporal and morphological gap between small-bodied, Barremian taxa, and extremely large-bodied taxa from the latest…
A Megaraptor-like theropod (Dinosauria: Tetanurae) in Australia: support for faunal exchange across eastern and western Gondwana in the Mid-Cretaceous
- N. Smith, P. Makovicky, F. Agnolin, M. Ezcurra, D. Pais, S. Salisbury
- Environmental Science, GeographyProceedings of the Royal Society B: Biological…
- 22 September 2008
This ulna from the Early Cretaceous Eumeralla Formation of Australia is described, representing the first Australian non-avian theropod with unquestionable affinities to taxa from other Gondwanan landmasses, suggesting faunal interchange between eastern and western Gondwana during the Mid-Cretaceous.
Anatomy of a basal sauropodomorph dinosaur from the Early Jurassic Hanson Formation of Antarctica
The anatomy of a basal sauropodomorph (Dinosauria: Saurischia) from the Early Jurassic Hanson Formation of Antarctica is described in detail and preliminary phylogenetic analyses suggest a close relationship between the new Antarctic taxon and Lufengosaurus.