Rio La Grita: Hettangian, Venezuela
collected by Sanchez-Villagra, Moody 1992-1994
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Osteichthyes
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Osteichthyes indet.
Huxley 1880
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| "ganoid" scales | ||||||||||
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Reptilia
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Reptilia indet.
Laurenti 1768
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Barrett et al. 2008 | |||||||||
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Archosauria indet.
(Cope 1869)
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Barrett et al. 2008 | |||||||||
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Dinosauria indet.
(Owen 1842)
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Barrett et al. 2008 | |||||||||
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Saurischia indet.
(Seeley 1888)
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Barrett et al. 2008 | 1 individual | ||||||||
| MBLUZ P1443 | ||||||||||
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cf. Lesothosaurus sp.
Galton 1978
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1 individual | |||||||||
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= Fabrosauridae indet.
Galton 1972
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Knoll 1999 | |||||||||
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= Ornithischia indet.
Seeley 1888
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Barrett et al. 2008 | |||||||||
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= Laquintasaura venezuelae n. gen., n. sp.
Barrett et al. 2014
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Barrett et al. 2014 | |||||||||
| Hundreds of individual elements (some isolated, some in dense accumulations), including teeth, cranial elements (premaxilla, maxilla, jugals, parietals, frontal, postfrontal, exoccipital/ opisthotic, pterygoid, quadrates), cervical, dorsal, sacral and caudal vertebrae, ribs, scapulae, pelvic girdle elements, and hindlimb material; no forelimb material is known and pedal material is rare | ||||||||||
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Theropoda indet.
(Marsh 1881)
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Sánchez-Villagra et al. 2008 | 5 specimens | ||||||||
| teeth | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Venezuela | State/province: | Táchira | County: | La Grita |
| Coordinates: | 8.1° North, 72.0° West (view map) | ||||
| Paleocoordinates: | 1.1° North, 42.1° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Altitude: | 1598 meters | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Early/Lower Jurassic |
| Stage: | Hettangian | 10 m.y. bin: | Jurassic 1 |
| Key time interval: | Hettangian | ||
| Age range of interval: | 201.40000 - 199.50000 m.y. ago |
Stratigraphy
| Formation: | La Quinta | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Upper interval of the formation | |||||
Lithology and environment
| Primary lithology: | siltstone |
| Lithology description: purple siltstone | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | -bonebed |
| Size of fossils: | macrofossils |
| Spatial orientation: | random |
| Abundance in sediment: | abundant |
| Fragmentation: | occasional |
Collection methods and comments
| Collection methods: | selective quarrying,field collection,observed (not collected) | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | Sanchez-Villagra, Moody | Collection dates: | 1992-1994 |
| Collection method comments: MBLUZ: Museo de Biologia de la Universidad del Zulia, Maracaibo | |||
Metadata
| Also known as: | La Quinta Quarry | ||
| Database number: | 55294 | ||
| Authorizer: | M. Carrano, R. Butler | Enterer: | K. Maguire, R. Butler, M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2005-10-06 11:53:10 | Last modified: | 2022-04-08 11:21:32 |
| Access level: | the public | Released: | 2005-10-06 11:53:10 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 14786. | ETE | D. E. Russell, O. O. Rivas, B. Battail and D. A. Russell. 1992. Découverte de vertébrés fossiles dans la Formation de La Quinta, Jurassique du Vénézuéla occidental [Discovery of fossil vertebrates in the La Quinta Formation, Jurassic of western Venezuela]. Comptes Rendus de l'Académie des Sciences, Paris, Série II 314:1247-1252 [M. Carrano/K. Maguire/M. Carrano] |
Secondary references:
| 43931 | P. M. Barrett, R. J. Butler, F. E. Novas, S. C. Moore-Fay, J. M. Moody, J. M. Clark, and M. R. Sanchez-Villagra. 2008. Dinosaur remains from the La Quinta Formation (Lower or Middle Jurassic) of the Venezuelan Andes. Palaeontologische Zeitschrift 82(2):163-177 [R. Butler/R. Butler] | |
| 52146 | P. M. Barrett, R. J. Butler, R. Mundil, T. M. Scheyer, R. B. Irmis and M. R. Sánchez-Villagra. 2014. A palaeoequatorial ornithischian and new constraints on early dinosaur diversification. Proceedings of the Royal Society B 281:20141147:1-6 [R. Benson/R. Benson/M. Carrano] | |
| 76455 | F. Knoll. 1999. The family Fabrosauridae. In J. I. Canudo & G. Cuenca-Bescós (ed.), IV European Workshop on Vertebrate Paleontology. Programme and Abstracts. Field Guide 65 [M. Carrano/M. Carrano] | |
| 43397 | M. R. Sánchez-Villagra, W. Brinkmann, and R. Lozsán. 2008. The Paleozoic and Mesozoic vertebrate record of Venezuela: an overview, summary of previous discoveries and report of a mosasaur from the La Luna Formation (Cretaceous). Palaeontologische Zeitschrift 82(2):113-124 [M. Carrano/M. Carrano] | |
| 14726 | ETE | M. R. Sanchez-Villagra and J. M. Clark. 1994. An ornithischian from the Jurassic of the Venezuelan Andes. Journal of Vertebrate Paleontology 14(3, suppl.):44A [M. Carrano/M. Carrano] |
| 23520 | ETE | D. B. Weishampel, P. M. Barrett, R. A. Coria, J. Le Loeuff, X. Xu, X. Zhao, A. Sahni, E. M. P. Gomani, and C. R. Noto. 2004. Dinosaur distribution. In D. B. Weishampel, H. Osmolska, and P. Dodson (eds.), The Dinosauria (2nd edition). University of California Press, Berkeley 517-606 [M. Carrano/M. Carrano] |