Cabecera del río Mañero, km 126, Ruta 26: Norian, Argentina
collected by J. Bonaparte 1962
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Neoaetosauroides engaeus n. gen., n. sp.
Bonaparte 1969
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Arcucci et al. 2004 | 2 individuals | ||||||||
| PVL 3525 (holotype), partial lower jaw and postcranial skeleton. PVL 3528, premaxilla, maxilla, vertebrae and osteoderms. | ||||||||||
| 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 | |||||
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 |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| 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 |
Metadata
| Also known as: | Neoaetosauroides holotype; head of the Manero river | ||
| Database number: | 105692 | ||
| Authorizer: | R. Butler | Enterer: | R. Butler |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2011-02-23 21:26:40 | Last modified: | 2012-04-09 17:10:16 |
| Access level: | the public | Released: | 2011-02-23 21:26:40 |
| 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] |
| 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] |