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    The earliest bird-line archosaurs and the assembly of the dinosaur body plan

    Nesbitt, Sterling J, Butler, Richard J, Ezcurra, Martín D, Barrett, Paul M, Stocker, Michelle R, Angielczyk, Kenneth D, Smith, Roger M H, Sidor, Christian A, Niedźwiedzki, Grzegorz, Sennikov, Andrey G, Charig, Alan J
    Nature, 27 April 2017, Vol.544(7651), pp.484-487 [Revue évaluée par les pairs]

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    Cetiosauriscus von Huene, 1927 (reptilia, sauropodomorpha) : proposed designation of C. stewarti Charig, 1980 as the type species

    Charig, Alan J
    In: Bulletin of zoological nomenclature. - London. - 1993, 50, 4, p. 282-283
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    Titre: Cetiosauriscus von Huene, 1927 (reptilia, sauropodomorpha) : proposed designation of C. stewarti Charig, 1980 as the type species / A. J. Charig
    Auteur: Charig, Alan J
    Sujet RERO: Saurischiens - Diplodocidés - Reptiles - Paléozoologie
    Sujet RERO - forme: [Nomenclature] - [Publications électroniques]
    Publication en relation: In: Bulletin of zoological nomenclature. - London. - 1993, 50, 4, p. 282-283
    Document hôte: Bulletin of zoological nomenclature : the periodical of the International Commission on Zoological Nomenclature
    No RERO: R007906722
    Permalien:
    http://data.rero.ch/01-R007906722/html?view=GE_V1

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    Data from: The earliest bird-line archosaurs and the assembly of the dinosaur body plan

    Nesbitt, Sterling J., Butler, Richard J., Ezcurra, Martin D., Barrett, Paul M., Stocker, Michelle R., Angielczyk, Kenneth D., Smith, Roger M. H., Sidor, Christian A., Niedźwiedzki, Grzegorz, Sennikov, Andrey G., Charig, Alan J.
    DataCite
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    Titre: Data from: The earliest bird-line archosaurs and the assembly of the dinosaur body plan
    Auteur: Nesbitt, Sterling J.; Butler, Richard J.; Ezcurra, Martin D.; Barrett, Paul M.; Stocker, Michelle R.; Angielczyk, Kenneth D.; Smith, Roger M. H.; Sidor, Christian A.; Niedźwiedzki, Grzegorz; Sennikov, Andrey G.; Charig, Alan J.
    Editeur: Dryad Digital Repository
    Date: 2017
    Sujet: Archosaur ; Biogeography ; Phylogeny ; Ruhuhu Basin ; Tanzania ; Africa ; Triassic ; Middle Triassic ; Mesozoic ; Teleocrater ; Dinosauria ; Pterosauria
    Identifiant: 10.5061/DRYAD.TJ428 (DOI); 0028-0836 (ISSN); 10.5061/DRYAD.TJ428/1 (RELATED DOI); 10.5061/DRYAD.TJ428/3 (RELATED DOI); 10.5061/DRYAD.TJ428/5 (RELATED DOI); 10.5061/DRYAD.TJ428/6 (RELATED DOI); 10.5061/DRYAD.TJ428/7 (RELATED DOI); 10.5061/DRYAD.TJ428/8 (RELATED DOI); 10.5061/DRYAD.TJ428/9 (RELATED DOI); 10.5061/DRYAD.TJ428/10 (RELATED DOI); 10.5061/DRYAD.TJ428/11 (RELATED DOI); 10.5061/DRYAD.TJ428/12 (RELATED DOI); 10.5061/DRYAD.TJ428/13 (RELATED DOI); 10.5061/DRYAD.TJ428/14 (RELATED DOI); 10.5061/DRYAD.TJ428/2 (RELATED DOI); 10.5061/DRYAD.TJ428/4 (RELATED DOI); 10.1038/NATURE22037 (RELATED DOI); 10.1038/NATURE22037 (RELATED DOI)

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    The oldest dinosaur? A Middle Triassic dinosauriform from Tanzania

    Nesbitt, Sterling J, Barrett, Paul M, Werning, Sarah, Sidor, Christian A, Charig, Alan J
    Biology letters, 23 February 2013, Vol.9(1), pp.20120949 [Revue évaluée par les pairs]
    MEDLINE/PubMed (U.S. National Library of Medicine)
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    Titre: The oldest dinosaur? A Middle Triassic dinosauriform from Tanzania
    Auteur: Nesbitt, Sterling J; Barrett, Paul M; Werning, Sarah; Sidor, Christian A; Charig, Alan J
    Sujet: Biological Evolution ; Dinosaurs -- Anatomy & Histology
    Description: The rise of dinosaurs was a major event in vertebrate history, but the timing of the origin and early diversification of the group remain poorly constrained. Here, we describe Nyasasaurus parringtoni gen. et sp. nov., which is identified as either the earliest known member of, or the sister-taxon to, Dinosauria. Nyasasaurus possesses a unique combination of dinosaur character states and an elevated growth rate similar to that of definitive early dinosaurs. It demonstrates that the initial dinosaur radiation occurred over a longer timescale than previously thought (possibly 15 Myr earlier), and that dinosaurs and their immediate relatives are better understood as part of a larger Middle Triassic archosauriform radiation. The African provenance of Nyasasaurus supports a southern Pangaean origin for Dinosauria.
    Fait partie de: Biology letters, 23 February 2013, Vol.9(1), pp.20120949
    Identifiant: 1744-957X (E-ISSN); 23221875 Version (PMID); 10.1098/rsbl.2012.0949 (DOI)

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    The anatomy of Teleocrater Rhadinus, an early avemetatarsalian from the lower portion of the Lifua Member of the Manda Beds (Middle Triassic)

    Nesbitt, Sterling J, Butler, Richard J, Ezcurra, Martín D, Charig, Alan J, Barrett, Paul M
    Journal of Vertebrate Paleontology, 29 November 2017, Vol.37, p.142 [Revue évaluée par les pairs]
    Taylor & Francis (Taylor & Francis Group)
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    Titre: The anatomy of Teleocrater Rhadinus, an early avemetatarsalian from the lower portion of the Lifua Member of the Manda Beds (Middle Triassic)
    Auteur: Nesbitt, Sterling J; Butler, Richard J; Ezcurra, Martín D; Charig, Alan J; Barrett, Paul M
    Sujet: Geology
    Description: Bird-line archosaurs (= Avemetatarsalia, the clade containing birds, dinosaurs, pterosaurs, and their kin) originated in the Triassic Period. However, the earliest evolution of this group is poorly documented because fossils are extremely rare and consist mostly of postcrania. Here, we document...
    Fait partie de: Journal of Vertebrate Paleontology, 29 November 2017, Vol.37, p.142
    Identifiant: 0272-4634 (ISSN); 1937-2809 (E-ISSN); 10.1080/02724634.2017.1396539 (DOI)

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    The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships

    Norman, David B., Crompton, Alfred W., Butler, Richard J., Porro, Laura B., Charig, Alan J.
    Zoological Journal of the Linnean Society, September 2011, Vol.163(1), pp.182-276 [Revue évaluée par les pairs]
    John Wiley & Sons, Inc.
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    Titre: The Lower Jurassic ornithischian dinosaur Heterodontosaurus tucki Crompton & Charig, 1962: cranial anatomy, functional morphology, taxonomy, and relationships
    Auteur: Norman, David B.; Crompton, Alfred W.; Butler, Richard J.; Porro, Laura B.; Charig, Alan J.
    Sujet: Upper Elliot And Clarens Formations ; Dinosauria ; Sinemurian/Pliensbachian ; Ornithischia ; Phylogenetics ; Systematics
    Description: The cranial anatomy of the Lower Jurassic ornithischian dinosaur Crompton & Charig, 1962 is described in detail for the first time on the basis of two principal specimens: the holotype (SAM‐PK‐K337) and referred skull (SAM‐PK‐K1332). In addition several other specimens that have a bearing on the interpretation of the anatomy and biology of are described. The skull and lower jaw of are compact and robust but perhaps most notable for the heterodont dentition that merited the generic name. Details of the cranial anatomy are revealed and show that the skull is unexpectedly specialized in such an early representative of the Ornithischia, including: the closely packed, hypsodont crowns and ‘warping’ of the occlusal surfaces (created by progressive variation in the angulation of wear on successive crowns) seen in the cheek dentition; the unusual sutural relationships between the bones along the dorsal edge of the lower jaw; the very narrow, deeply vaulted palate and associated structures on the side wall of the braincase; and the indications of cranial pneumatism (more commonly seen in basal archosaurs and saurischian dinosaurs). Evidence for tooth replacement (which has long been recognized, despite frequent statements to the contrary) is suggestive of an episodic, rather than continuous, style of tooth replacement that is, yet again, unusual in diapsids generally and particularly so amongst ornithischian dinosaurs. Cranial musculature has been reconstructed and seems to conform to that typically seen in diapsids, with the exception of the encroachment of M. adductor mandibulae externus superficialis across the lateral surface of the temporal region and external surface of the lower jaw. Indications, taken from the unusual shape of the occlusal surfaces of the cheek dentition and jaw musculature, are suggestive of a novel form of jaw action in this dinosaur. The taxonomy of currently known late Karoo‐aged heterodontosaurids from southern Africa is reviewed. Although complicated by the inadequate nature of much of the known material, it is concluded that two taxa may be readily recognized: and . At least one additional taxon is recognized within the taxa presently named and ; however, both remain taxonomically problematic and their status needs to be further tested and may only be resolved by future discoveries. The only other named taxon, , represents an invalid name. The recognition of at least four distinct taxa indicates that the heterodontosaurids were speciose within the late Karoo ecosystem. The systematics of and its congeners has been analysed, using a restricted sample of taxa. A basal (nongenasaurian) position within Ornithischia is re‐affirmed. There are at least four competing hypotheses concerning the phylogenetic placement of the Heterodontosauridae, so the evidence in support of the various hypotheses is reviewed in some detail. At present the best‐supported hypothesis is the one which places Heterodontosauridae in a basal (non‐genasaurian) position; however, the evidence is not fully conclusive and further information is still needed in respect of the anatomy of proximate outgroups, as well as more complete anatomical details for other heterodontosaurids. Heterodontosaurids were not such rare components of the late Karoo ecosystem as previously thought; evidence also suggests that from a phylogenetic perspective they occupied a potentially crucial position during the earliest phases of ornithischian dinosaur evolution. © 2011 The Linnean Society of London, , 2011.
    Fait partie de: Zoological Journal of the Linnean Society, September 2011, Vol.163(1), pp.182-276
    Identifiant: 0024-4082 (ISSN); 1096-3642 (E-ISSN); 10.1111/j.1096-3642.2011.00697.x (DOI)

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    Mandasuchus tanyauchen, gen. et sp. nov., a pseudosuchian archosaur from the Manda Beds (?Middle Triassic) of Tanzania

    Butler, Richard J, Nesbitt, Sterling J, Charig, Alan J, Gower, David J, Barrett, Paul M
    Journal of Vertebrate Paleontology, 29 November 2017, Vol.37, p.96 [Revue évaluée par les pairs]
    Taylor & Francis (Taylor & Francis Group)
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    Titre: Mandasuchus tanyauchen, gen. et sp. nov., a pseudosuchian archosaur from the Manda Beds (?Middle Triassic) of Tanzania
    Auteur: Butler, Richard J; Nesbitt, Sterling J; Charig, Alan J; Gower, David J; Barrett, Paul M
    Sujet: Geology
    Description: The diverse assemblage of extinct archosaur species known from the Manda Beds of Tanzania has provided key insights into the timing and tempo of the early part of the archosaur radiation during the Middle Triassic. Several archosaur specimens were collected from the Manda Beds in 1933 by F....
    Fait partie de: Journal of Vertebrate Paleontology, 29 November 2017, Vol.37, p.96
    Identifiant: 0272-4634 (ISSN); 1937-2809 (E-ISSN); 10.1080/02724634.2017.1343728 (DOI)

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    Archaeopteryx is not a Forgery

    Charig, Alan J., Greenaway, Frank, Milner, Angela C., Walker, Cyril A., Whybrow, Peter J.
    Science, 02 May 1986, Vol.232(4750), pp.622-626 [Revue évaluée par les pairs]
    Archival Journals (JSTOR)
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    Titre: Archaeopteryx is not a Forgery
    Auteur: Charig, Alan J.; Greenaway, Frank; Milner, Angela C.; Walker, Cyril A.; Whybrow, Peter J.
    Description: Archaeopteryx lithographica might be regarded as the most important zoological species known, fossil or recent. Its importance lies not in that its transitional nature is unique--there are many such transitional forms at all taxonomic levels--but in the fact that it is an obvious and comprehensible example of organic evolution. There have been recent allegations that the feather impressions on Archaeopteryx are a forgery. In this report, proof of authenticity is provided by exactly matching hairline cracks and dendrites on the feathered areas of the opposing slabs, which show the absence of the artificial cement layer into which modern feathers could have been pressed by a forger.
    Fait partie de: Science, 02 May 1986, Vol.232(4750), pp.622-626
    Identifiant: 00368075 (ISSN); 10959203 (E-ISSN)

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    Unsure accuracy

    Charig, Alan J
    Nature, 11 December 1986, Vol.324(6097), pp.521 [Revue évaluée par les pairs]
    MEDLINE/PubMed (U.S. National Library of Medicine)
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    Titre: Unsure accuracy
    Auteur: Charig, Alan J
    Sujet: Sciences (General) ; Physics;
    Fait partie de: Nature, 11 December 1986, Vol.324(6097), pp.521
    Identifiant: 1476-4687 (E-ISSN); 29517760 Version (PMID); 10.1038/324521b0 (DOI)

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    The systematic position of Baryonyx walkeri, in the light of Gauthier's reclassification of the Theropoda

    Charig, Alan J, Milner, Angela C
    Dinosaur Systematics
    Cambridge Core All Books (Cambridge University Press)
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    Titre: The systematic position of Baryonyx walkeri, in the light of Gauthier's reclassification of the Theropoda
    Auteur: Charig, Alan J; Milner, Angela C
    Editeur: Cambridge University Press
    Date: 30 November 1990
    Sujet: Geology
    Description: AbstractContinuing preparation of the unique specimen of Baryonyx walkeri has already provided much additional information on this recently described dinosaur, including the startling observation that the lower teeth are twice as numerous per unit length of jaw as are the upper teeth. The characters of the animal demonstrate conclusively that it is a theropod dinosaur, that it is not a spinosaurid, that it cannot be fitted satisfactorily into Gauthier's recent classification of the theropods, and that it is sufficiently distinctive from all other theropods to justify the present authors' earlier proposal of a new family Baryonychidae. Some fragmentary material described from the Late Cretaceous of Niger and Morocco and referred to the Spinosauridae is more likely to be baryonychid.IntroductionOur lecture at the Drumheller Symposium on a new theropod dinosaur from the Wealden of Surrey was followed by our publication (Charig and Milner 1986) of a preliminary account of the animal,...
    Fait partie de: Dinosaur Systematics
    Identifiant: 9780521366724 (ISBN); 9780521438100 (ISBN); 0521366720 (ISBN); 0521438101 (ISBN)