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dc.contributor.author
Spiekman, Stephan N. F.
dc.contributor.author
Ezcurra, Martin Daniel
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dc.contributor.author
Butler, Richard J.
dc.contributor.author
Fraser, Nicholas C.
dc.contributor.author
Maidment, Susannah C. R.
dc.date.available
2022-09-15T17:39:22Z
dc.date.issued
2021-10
dc.identifier.citation
Spiekman, Stephan N. F.; Ezcurra, Martin Daniel; Butler, Richard J.; Fraser, Nicholas C.; Maidment, Susannah C. R.; Pendraig milnerae, a new small-sized coelophysoid theropod from the Late Triassic of Wales; Royal Society of Chemistry; Royal Society Open Science; 8; 10; 10-2021; 1-27
dc.identifier.issn
2054-5703
dc.identifier.uri
http://hdl.handle.net/11336/168965
dc.description.abstract
We describe a new small-bodied coelophysoid theropod dinosaur, Pendraig milnerae gen. et sp. nov, from the Late Triassic fissure fill deposits of Pant-y-ffynnon in southern Wales. The species is represented by the holotype, consisting of an articulated pelvic girdle, sacrum and posterior dorsal vertebrae, and an associated left femur, and by two referred specimens, comprising an isolated dorsal vertebra and a partial left ischium. Our phylogenetic analysis recovers P. milnerae as a non-coelophysid coelophysoid theropod, representing the first-named unambiguous theropod from the Triassic of the UK. Recently, it has been suggested that Pant-y-ffynnon and other nearby Late Triassic to Early Jurassic fissure fill faunas might have been subjected to insular dwarfism. To test this hypothesis for P. milnerae, we performed an ancestral state reconstruction analysis of body size in early neotheropods. Although our results indicate that a reduced body size is autapomorphic for P. milnerae, some other coelophysoid taxa show a similar size reduction, and there is, therefore, ambiguous evidence to indicate that this species was subjected to dwarfism. Our analyses further indicate that, in contrast with averostran-line neotheropods, which increased in body size during the Triassic, coelophysoids underwent a small body size decrease early in their evolution.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Royal Society of Chemistry
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
BODY SIZE EVOLUTION
dc.subject
COELOPHYSOIDEA
dc.subject
OSTEOLOGY
dc.subject
PENDRAIG
dc.subject
THEROPODA
dc.subject
TRIASSIC
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Pendraig milnerae, a new small-sized coelophysoid theropod from the Late Triassic of Wales
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-09-13T11:00:18Z
dc.journal.volume
8
dc.journal.number
10
dc.journal.pagination
1-27
dc.journal.pais
Reino Unido
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dc.description.fil
Fil: Spiekman, Stephan N. F.. University of Birmingham; Reino Unido. Natural History Museum; Reino Unido
dc.description.fil
Fil: Ezcurra, Martin Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
dc.description.fil
Fil: Butler, Richard J.. University of Birmingham; Reino Unido
dc.description.fil
Fil: Fraser, Nicholas C.. National Museums of Scotland; Reino Unido
dc.description.fil
Fil: Maidment, Susannah C. R.. University of Birmingham; Reino Unido. Natural History Museum; Reino Unido
dc.journal.title
Royal Society Open Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1098/rsos.210915
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://royalsocietypublishing.org/doi/10.1098/rsos.210915
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