List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Ornithomimidae indet.
Marsh 1890
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1 specimen | |||||||||
| tooth "B" | ||||||||||
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= Theropoda indet.
Marsh 1881
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Soto et al. 2011 | |||||||||
| Soto & Cambiaso (2006) | ||||||||||
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Camptosaurinae indet.
Abel 1919
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1 specimen | |||||||||
| tooth "A2" | ||||||||||
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= Kalodontidae indet.
Nopcsa 1901
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Mones 1972 | |||||||||
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= ? Ornithopoda indet.
Marsh 1881
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Weishampel and Weishampel 1983 | |||||||||
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= Iguanodontia indet.
Baur 1891
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Soto et al. 2011 | |||||||||
| Soto & Cambiaso (2006) | ||||||||||
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Camptosaurinae indet.
Abel 1919
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1 specimen | |||||||||
| tooth "A1" | ||||||||||
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= ? Ornithopoda indet.
Marsh 1881
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Weishampel and Weishampel 1983 | |||||||||
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= Iguanodontia indet.
Baur 1891
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Soto et al. 2011 | |||||||||
| Soto & Cambiaso (2006) | ||||||||||
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Reptilia
- Uruguaysuchidae
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Uruguaysuchus aznarezi n. gen., n. sp.
Rusconi 1933
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Mones 1972 | 1 specimen | ||||||||
| CA unnumbered - holotype (an approximately.1.2-m-long articulated adult individual (including a complete skull, mandible, right forelimb, 18 vertebrae, both ilia and partial right hindlimb, as well as a few associated osteoderms); 5 partial paratype skeletons also found, but now lost (Soto et al. 2011); FC-DPV 2320 - referred specimen (partial skull, a lower jaw and three cervical vertebrae) | ||||||||||
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Uruguaysuchus terrai n. sp.
Rusconi 1933
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Mones 1972 | 1 specimen | ||||||||
| synonym of Uruguaysuchus aznarezi | ||||||||||
| CA unnumbered - type (a complete mandible and skull in articulation) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Uruguay | State/province: | Paysandù |
| Coordinates: | 32.3° South, 57.2° West (view map) | ||
| Paleocoordinates: | 38.8° South, 29.4° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | small collection |
Stratigraphy
Lithology and environment
| Primary lithology: | sandstone |
| Includes fossils? | Y |
| Lithology description: Guichón Formation comprises mainly pink-greyish to reddish sandstones, which contain moderate to well-sorted, subrounded, fine to medium-sized grains in a pelitic matrix. These sandstones (which compositionally are feldspathic wackes) are either massive or may instead exhibit parallel lamination, cross-lamination and graded bedding. | |
| Environment: | fluvial indet. |
| Geology comments: These lithologies were deposited in southwest- trending alluvial–fluvial systems comprising low-sinuosity channels traversing through sandy plains. Subordinate to the already mentioned sandstones are conglomeratic and pelitic lithologies, interpreted as channel-fill and overbank deposits, respectively. It is inferred that the Guichón Formation was deposited in warm, semi-arid climatic conditions. | |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | concentrated |
| Size of fossils: | macrofossils,mesofossils |
| Preservation of anatomical detail: | medium |
| Associated major elements: | some |
| Disassociated major elements: | some |
| Disassociated minor elements: | some |
Collection methods and comments
| Collection methods: | salvage,selective quarrying,mechanical,field collection,survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | C. Rusconi | Collection dates: | 1930s |
Metadata
| Also known as: | Uruguaysuchus aznarezi type | ||
| Database number: | 65322 | ||
| Authorizer: | M. Carrano, P. Mannion | Enterer: | M. Carrano, P. Mannion |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2006-09-21 06:19:39 | Last modified: | 2018-02-26 15:06:55 |
| Access level: | the public | Released: | 2006-09-21 06:19:39 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 24360. | ETE | F. v. Huene. 1934. Neue Saurier-Zähne aus der Kreide von Uruguay [New saurian teeth from the Cretaceous of Uruguay]. Centralblatt für Mineralogie, Geologie und Paläontologie, Abteilung B: Geologie und Paläontologie 1934(4):183-189 [M. Carrano/M. Carrano] |
Secondary references:
| 64844 | F. v. Huene. 1934. Nuevos dientes de Saurios de cretáceo del Uruguay [New saurian teeth from the Cretaceous of Uruguay]. Boletín, Instituto de Geología y Perforaciones (Uruguay) 21:13-20 [M. Carrano/M. Carrano] | |
| 18841 | ETE | A. Mones. 1972. Lista de los vertebrados fosiles del Uruguay, I. Chondrichthyes, Osteichthyes, Reptilia, Aves [List of the fossil vertebrates of Uruguay, I. Chondrichthyes, Osteichthyes, Reptilia, Aves]. Comunicaciones Paleontologicas del Museo de Historia Natural de Montevideo 1(3):23-35 [M. Carrano/M. Carrano] |
| 42879 | M. Soto, D. Perea, and A. Cambiaso. 2012. First sauropod (Dinosauria: Saurischia) remains from the Guichón Formation, Late Cretaceous of Uruguay. Journal of South American Earth Sciences 33:68-79 [P. Mannion/P. Mannion] | |
| 39436 | M. Soto, D. Pol, and D. Perea. 2011. A new specimen of Uruguaysuchus aznarezi (Crocodyliformes: Notosuchia) from the middle Cretaceous of Uruguay and its phylogenetic relationships. Zoological Journal of the Linnean Society 163:S173-S198 [P. Mannion/P. Mannion] | |
| 61518 | D. B. Weishampel and J. B. Weishampel. 1983. Annotated localities of ornithopod dinosaurs: implications to Mesozoic paleobiogeography. The Mosasaur 1:43-87 [M. Carrano/M. Carrano] |