La Angostura, Río Chico (MLP): Campanian - Maastrichtian, Argentina
collected by C. Ameghino 1889
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
|
||||||||||
|
Dinosauria indet.
Owen 1842
|
1 individual | |||||||||
| MLP 77-V-29-1 | ||||||||||
|
= Argyrosaurus superbus n. gen., n. sp.
Lydekker 1893
|
Lydekker 1893 | |||||||||
| MLP 77-V-29-1 - holotype (partly articulated left forelimb consisting of the humerus, ulna, radius, probably two carpals [now lost], and all five metacarpals) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Chubut |
| Coordinates: | 45.5° South, 69.2° West (view map) | ||
| Paleocoordinates: | 48.0° South, 55.9° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Key time interval: | Campanian - Maastrichtian | ||
| Age range of interval: | 83.60000 - 66.00000 m.y. ago |
Stratigraphy
| Geological group: | Chubut | Formation: | Lago Colhué Huapi | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: supposedly 100 m below the "Notostylops beds"; sometimes listed as Castillo Fm.
Probably upper member of the Bajo Barreal Formation, Chubut Group (Bonaparte and Gasparini, 1979); Campanian–?Maastrichtian (Late Cretaceous) (Casal et al., 2007). Based on outcrops in the western part of the San Jorge Basin, the Bajo Barreal Formation is generally considered middle Cenomanian–Turonian in age (Bridge et al., 2000; Lamanna et al., 2002); however, recent evidence indicates that the more easterly exposures in the less well-studied Rio Chico area are much younger, i.e., Campanian–?Maastrichtian (Casal et al., 2007) (Mannion and Otero, 2012). | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Associated major elements: | many |
| 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 | ||
| Museum repositories: | MLP | ||
| Collectors: | C. Ameghino | Collection dates: | 1889 |
| Collection method comments: This is probably the same area prospected by the FMNH but no collections were made; they found evidence of prior work, including tools from Sheffield, England and ordered piles of dinosaur bones. The forelimb of Argyrosaurus seems to have come from a fairly complete skeleton that was not entirely excavated. | |||
Metadata
| Also known as: | Argyrosaurus type, Pampa Pelada | ||
| Database number: | 51618 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | F. Aspromonte | Research group: | vertebrate |
| Created: | 2005-06-09 05:51:11 | Last modified: | 2023-11-29 07:55:24 |
| Access level: | the public | Released: | 2005-06-09 05:51:11 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 15092. | F. Ameghino. 1889. Contribución al conocimiento de los mamíferos fósiles de la República Argentina [Contribution to the knowledge of the fossil mammals of the Argentine Republic]. Actas de la Academia Nacional de Ciencias de la República Argentina en Córdoba 6:xxxii-1027 [M. Uhen/M. Uhen/M. Uhen] |
Secondary references:
| 63497 | C. Ameghino. 1890. Exploraciones geológicas en la Patagonia [Geological explorations in Patagonia]. Boletin del Instituto Geografico Argentino 11(1):3-40 [M. Carrano/M. Carrano] | |
| 59610 | J. F. Bonaparte. 1978. El Mesozoico de America de Sur y sus Tetrapodos [The Mesozoic of South America and its tetrapods]. Opera Lilloana 26:1-596 [M. Carrano/M. Carrano] | |
| 63573 | J. F. Bonaparte. 1984. I dinosauri dell’Argentina [. In G. M. Ronzoni, M. L. Greggio, & T. B. Guarinoni (eds.), Sulle Orme dei Dinosauri 125-143 [M. Carrano/M. Carrano] | |
| 16547 | ETE | J. F. Bonaparte. 1996. Cretaceous tetrapods of Argentina. Münchner Geowissenschaften Abhandlungen 30:73-130 [M. Carrano/M. Carrano/M. Carrano] |
| 13929 | ETE | J. F. Bonaparte and Z. B. Gasparini. 1979. Los sauropodos de los grupos Neuquén y Chubut, y sus relaciones cronologicas [The sauropods of the Neuquén and Chubut Groups, and their chronological relationships]. Actas del VII Congreso Geológico Argentino, Neuquén 2:393-406 [M. Carrano/M. Carrano/M. Carrano] |
| 76410 | G. A. Casal, J. O. Allard, and N. Foix. 2015. Análisis estratigráfico y paleontológico del Cretácico Superior en la Cuenca del Golfo San Jorge: nueva unidad litoestratigráfica para el Grupo Chubut [Stratigraphic and paleontological analysis of the Upper Cretaceous in the Golfo San Jorge Basin: a new lithostratigraphic unit for the Chubut Group]. Revista de la Asociación Geológica Argentina 72(1):77-95 [M. Carrano/M. Carrano] | |
| 66791 | G. A. Casal, R. D. Martinez, M. Luna and L. M. Ibiricu. 2016. Ordenamiento y caracterización faunisitica del Cretacico superior del Grupo Chubut, Cuenca del Golfo San Jorge, Argentina. Revista Brasileira de Paleontologia 19(1):53-70 [E. Vlachos/E. Vlachos] | |
| 63186 | E. Feruglio. 1931. Nuevas observaciones geológicas en la Patagonia Central [New geological observations in central Patagonia]. Contribuciones a la Primera Reunión Nacional de Geografía 4:1-24 [M. Carrano/M. Carrano] | |
| 36798 | ETE | R. Lydekker. 1893. Contributions to a knowledge of the fossil vertebrates of Argentina. I. — The dinosaurs of Patagonia. Anales del Museo de La Plata. Paleontología Argentina 2:1-16 [M. Carrano/M. Carrano/M. Carrano] |
| 41410 | P. D. Mannion and A. Otero. 2012. A reappraisal of the Late Cretaceous Argentinean sauropod dinosaur Argyrosaurus superbus, with a description of a new titanosaur genus. Journal of Vertebrate Paleontology 32(3):614-638 [P. Mannion/P. Mannion/F. Aspromonte] | |
| 36059 | ETE | L. G. Marshall. 1978. Adventures in Patagonia. Field Museum of Natural History Bulletin 49(3):4-11 [M. Carrano/M. Carrano] |
| 58994 | R. D. F. Martínez, M. C. Lamanna, F. E. Novas, R. C. Ridgley, G. A. Casal, J. E. Martínez, J. R. Vita and L. M. Witmer. 2016. A basal lithostrotian titanosaur (Dinosauria: Sauropoda) with a complete skull: implications for the evolution and paleobiology of Titanosauria. PLoS ONE 11(4):e0151661:1-82 [M. Carrano/M. Carrano] | |
| 45986 | A. Otero and M. Reguero. 2013. Dinosaurs (Reptilia, Archosauria) at Museo de La Plata, Argentina: annotated catalogue of the type material and Antarctic specimens. Palaeontologia Electronica 16(1):3T:1-24 [P. Mannion/J. Tennant/M. Carrano] | |
| 13712 | ETE | J. E. Powell. 2003. Revision of South American titanosaurid dinosaurs: palaeobiological, palaeobiogeographical and phylogenetic aspects. Records of the Queen Victoria Museum Launceston 111:1-173 [M. Carrano/M. Carrano/M. Carrano] |
| 52001 | S. Roth. 1898. Reconocimiento de la Region Andina de la República Argentina. Apuntes sobre la Geología y la Paleontología de los Territorios del Río Negro y Neuquén (Diciembre de 1895 á Junio de 1896) [Reconaissance of the Andean Region of the Argentine Republic. Notes on the Geology and Paleontology of the Territories of the Río Negro and Neuquén (December 1895 to June 1896)] 1-56 [M. Carrano/M. Carrano] |