Cabecera del río Mañero (upper), km 126, Ruta 26: Norian, Argentina
collected by J. Bonaparte 1962
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
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Neoaetosauroides engaeus
Bonaparte 1969
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Desojo and Baez 2005 | 1 individual | ||||||||
PVL 3842, incomplete dorsal and ventral armours, and vertebrae preserved as impressions | ||||||||||
see common names |
Geography
Country: | Argentina | State/province: | La Rioja | County: | General Lavalle |
Coordinates: | 30.0° South, 67.9° West (view map) | ||||
Paleocoordinates: | 39.1° South, 31.4° West | ||||
Basis of coordinate: | estimated from map | ||||
Geographic resolution: | small collection |
Time
Period: | Triassic | Epoch: | Late/Upper Triassic |
Stage: | Norian | 10 m.y. bin: | Triassic 4 |
Key time interval: | Norian | ||
Age range of interval: | 227.00000 - 208.50000 m.y. ago |
Stratigraphy
Geological group: | Agua de la Peña | Formation: | Los Colorados | ||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: highest levels of formation; formation is considered to be latest Triassic in age; specimen collected 60 metres above Neoaetosauroides holotype. |
Lithology and environment
Primary lithology: | red sandstone |
Includes fossils? | Y |
Environment: | fluvial-lacustrine indet. |
Geology comments: "The sequence was interpreted as deposited by moderately sinuous fluvial systems, which laterally interfinger with and grade into horizontally bedded flood-plain deposits. To the top of the sequence, thin-bedded sandstones and siltstones dominate and were deposited in ponds and as crevasse splays in overbank settings" (Arcucci et al. 2004) |
Taphonomy
Modes of preservation: | body,mold/impression |
Size of fossils: | macrofossils |
Fragmentation: | occasional |
Temporal resolution: | snapshot |
Collection methods and comments
Collection methods: | selective quarrying,surface (in situ),mechanical,field collection | ||
Reason for describing collection: | taxonomic analysis | ||
Collectors: | J. Bonaparte | Collection dates: | 1962 |
Collection method comments: PVL, Palaeontologia de Vertebrados, Instituto Miguel Lillo, Tucuman, Argentina; |
Metadata
Also known as: | head of the Manero river | ||
Database number: | 105696 | ||
Authorizer: | R. Butler | Enterer: | R. Butler |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2011-02-24 01:07:53 | Last modified: | 2012-04-09 17:07:46 |
Access level: | the public | Released: | 2011-02-24 01:07:53 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
12948. | ETE | J. F. Bonaparte. 1971. Los tetrapodos del sector superior de la Formacion Los Colorados, La Rioja, Argentina (Triásico Superior) [The tetrapods of the upper part of the Los Colorados Formation, La Rioja, Argentina (Upper Triassic)]. Opera Lilloana 22:1-183 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
13000 | ETE | A. B. Arcucci, C. A. Marsicano, and A. T. Caselli. 2004. Tetrapod association and palaeoenvironment of the Los Colorados Formation (Argentina): a significant sample from western Gondwana at the end of the Triassic. Géobios 37:557-568 [M. Carrano/M. Carrano/J. Alroy] |
35286 | J. B. Desojo and A. M. Baez. 2005. El esqueleto postcraneano de Neoaetosauroides (Archosauria: Aetosauria) del Triásico Superior del centro-oeste de Argentina. Ameghiniana 42:115-126 [R. Butler/R. Butler] | |
35285 | J. B. Desojo and A. M. Baez. 2007. Cranial morphology of the Late Triassic South American archosaur Neoaetosauroides engaeus: evidence for aetosaurian diversity. Palaeontology 50:267-276 [R. Butler/R. Butler] |