The ecology of a late triassic reptile assemblage from gloucestershire, England
Identifieur interne : 006116 ( Istex/Checkpoint ); précédent : 006115; suivant : 006117The ecology of a late triassic reptile assemblage from gloucestershire, England
Auteurs : N. C. Fraser [Royaume-Uni] ; G. M. Walkden [Royaume-Uni]Source :
- Palaeogeography, Palaeoclimatology, Palaeoecology [ 0031-0182 ] ; 1983.
Descripteurs français
English descriptors
- KwdEn :
- Acrodont dentition, Additional teeth, Archosaur, Assemblage, Carnivorous, Cavity systems, Clevosaurus, Clevosaurus hudsoni, Conical, Considerable range, Cromhall, Cromhall quarry, Dentary, Dentition, Dietary habits, Different genera, Ecology, Facet, Fauna, Fissure, Fraser, Genus, Geol, Hatchling, Hatchling dentition, Herbivorous, Herbivory, Hudsoni, Insectivorous, Kermack, Large insects, Lateral, Lateral view, Lizard, Lond, Maxilla, Maxillary, Maxillary dentition, Modern lizards, Palatine, Planocephalosaurus, Planocephalosaurus robinsonae, Pough, Predator, Premaxillary teeth, Reptile, Robinsonae, Sigmala, Sigmala sigmala, Small insects, Small vertebrates, Smaller form, Sphenodon, Sphenodontid, Sphenodontids, Successional, Triassic, Triassic sphenodontids, Tytherington, Tytherington form, Uromastix, Vertebrate, Whilst, Whiteside, Zool.
- Teeft :
- Acrodont dentition, Additional teeth, Archosaur, Assemblage, Carnivorous, Cavity systems, Clevosaurus, Clevosaurus hudsoni, Conical, Considerable range, Cromhall, Cromhall quarry, Dentary, Dentition, Dietary habits, Different genera, Ecology, Facet, Fauna, Fissure, Fraser, Genus, Geol, Hatchling, Hatchling dentition, Herbivorous, Herbivory, Hudsoni, Insectivorous, Kermack, Large insects, Lateral, Lateral view, Lizard, Lond, Maxilla, Maxillary, Maxillary dentition, Modern lizards, Palatine, Planocephalosaurus, Planocephalosaurus robinsonae, Pough, Predator, Premaxillary teeth, Reptile, Robinsonae, Sigmala, Sigmala sigmala, Small insects, Small vertebrates, Smaller form, Sphenodon, Sphenodontid, Sphenodontids, Successional, Triassic, Triassic sphenodontids, Tytherington, Tytherington form, Uromastix, Vertebrate, Whilst, Whiteside, Zool.
Abstract
Abstract: Triassic sediments recovered from fissure and cavity systems in Carboniferous Limestone at Cromhall Quarry, Gloucestershire, England have been found to contain abundant reptilian remains. Owing to the lack of spores, the precise ages of the fills are difficult to determined but evidence presented suggests they are Late Norian. Over ten genera of archosaur and lepidosaur have been identified from seven different fissure fills and the different faunal assemblages may represent successional ecosystems. The reptiles are mostly small and the largest, a dinosaur, is no more than one metre long. The lepidosaurs include five or six sphenodontids and the dentitions of four of these are examined in detail. The dietary habits of the sphenodontids are assessed, and by comparison with modern lizards it is concluded that at least one species was herbivorous. Different degrees of tooth wear in some species indicate that there was some intraspecific variation in diet. Interspecific competition partly explains the occurrence of the different proportions of each reptile observed at each of the seven sites.
Url:
DOI: 10.1016/0031-0182(83)90031-7
Affiliations:
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ISTEX:AF874814F1EDE71FE6BDB67A39020A1B7B286D0FLe document en format XML
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<front><div type="abstract" xml:lang="en">Abstract: Triassic sediments recovered from fissure and cavity systems in Carboniferous Limestone at Cromhall Quarry, Gloucestershire, England have been found to contain abundant reptilian remains. Owing to the lack of spores, the precise ages of the fills are difficult to determined but evidence presented suggests they are Late Norian. Over ten genera of archosaur and lepidosaur have been identified from seven different fissure fills and the different faunal assemblages may represent successional ecosystems. The reptiles are mostly small and the largest, a dinosaur, is no more than one metre long. The lepidosaurs include five or six sphenodontids and the dentitions of four of these are examined in detail. The dietary habits of the sphenodontids are assessed, and by comparison with modern lizards it is concluded that at least one species was herbivorous. Different degrees of tooth wear in some species indicate that there was some intraspecific variation in diet. Interspecific competition partly explains the occurrence of the different proportions of each reptile observed at each of the seven sites.</div>
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