Laguna La Colorada (PVL): Sinemurian, Argentina
collected by J. Bonaparte & M. Vince
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Mussaurus patagonicus n. gen., n. sp.
Bonaparte and Vince 1979
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80 individuals | |||||||||
| + 2 eggs; Holotype: PVL 4068, artic. post-hatchling skeleton; PVL 4208, partially artic. post-hatchling skeleton; PVL 4209, partial post-hatchling skull & lower jaw assoc. w/partially artic. postcranium; PVL 4210, almost complete post-hatchling skull assoc. w/postcrania; PVL 4211, incomplete post-hatchling skull, mandible, & disartic. postcrania; PVL 4212, partially articulated post-hatchling elements; PVL 4213, 3 closely assoc. skeletons of post-hatchlings; PVL 4587, 2 different partially artic. juvenile skeletons; PVL 5865, articulated post-hatchling skeleton & almost complete skull; MPM-PV 1813/1, juvenile skull artic. w/cervicodorsal series; MPM-PV 1813/2, isolated juvenile skull; MPM-PV 1813/4, juvenile skull artic. w/cervicodorsal series, scapular girdle, & forelimbs; MPM-PV 1814, incomplete R manus w/artic. distal carpals of adult; MACN-SC 3379, partially artic. adult postcranial remains, w/several cervicodorsal vertebrae, forelimb, & hind limb remains; MLP 61-III- 20-22, adult postcranium, incl. vertebrae & limbs; MLP 61-III-20-23, putative subadult postcranium, w/dorsal vertebrae, sacrum, ilia, ischia, pubis, & frag. forelimb & hind limb; MLP 68-II-27-1, 2 incomplete adult postcrania w/artic. cervical (w/frag. cranial bones assoc.), dorsal & caudal vertebrae, girdles & limbs (specimens A & B) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Santa Cruz |
| Coordinates: | 48.1° South, 68.3° West (view map) | ||
| Paleocoordinates: | 49.7° South, 21.5° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Early/Lower Jurassic |
| Stage: | Sinemurian | 10 m.y. bin: | Jurassic 1 |
| Key time interval: | Sinemurian | ||
| Age range of interval: | 199.50000 - 192.90000 m.y. ago | ||
| Age estimate: | 192.78 ± 0.14 to 192.74 ± 0.14 Ma (U/Pb) |
Stratigraphy
| Geological group: | El Tranquilo | Formation: | Laguna Colorada | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: upper "Coloradian" age | |||||
Lithology and environment
| Primary lithology: | nodular,brown calcareous siltstone |
| Includes fossils? | Y |
| Lithology description: "brown-weathering calcareous siltstone similar to the numerous oblate to spherically-shaped calcareous nodules that occur in the same horizons" | |
| Environment: | pond |
| Geology comments: "a post-rift thermally induced sag basin", setting is "around a floodplain pond under a seasonally warm climate" | |
Taphonomy
| Modes of preservation: | body,trace |
| Degree of concentration: | concentrated |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Articulated whole bodies: | some |
| Associated major elements: | some |
| Fragmentation: | occasional |
Collection methods and comments
| Collection methods: | selective quarrying,surface (in situ),mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collectors: | J. Bonaparte & M. Vince |
| Collection method comments: severn juvenile dinosaurs near two eggs and presumed nest | |
Metadata
| Also known as: | Estancia Cañadón Largo, Laguna Colorada | ||
| Database number: | 52015 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2005-07-12 05:59:37 | Last modified: | 2022-09-26 15:23:26 |
| Access level: | the public | Released: | 2005-07-12 05:59:37 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 13924. | ETE | J. F. Bonaparte and M. Vince. 1979. El hallazgo del primer nido de dinosaurios triasicos, (Saurischia, Prosauropoda), Triasico Superior de Patagonia, Argentina [The discovery of the first nest of Triassic dinosaurs (Saurischia, Prosauropoda,) from the Upper Triassic of Patagonia, Argentina]. Ameghiniana 16(1-2):173-182 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 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] | |
| 30646 | ETE | J. F. Bonaparte. 1984. Jurassic and Cretaceous terrestrial vertebrates of South America. National Geographic Society Research Reports (1975) 16:115-125 [M. Carrano/M. Carrano] |
| 76278 | I. A. Cerda, A. Chinsamy, and D. Pol. 2014. Long bone histology of Mussaurus patagonicus, a basal sauropodomorph dinosaur from the Early Jurassic of Argentina. XXVIII Jornadas Argentina de Paleontología de Vertebrados. Resúmenes. Ameghiniana 51(6 (suppl.)):7 [M. Carrano/M. Carrano/M. Carrano] | |
| 76243 | I. A. Cerda and D. Pol. 2013. Evidence for gender-specific reproductive tissue in a basal sauropodomorph dinosaur from the Late Triassic of Argentina. XXVII Jornadas Argentinas de Paleontología de Vertebrados. Resúmenes. Ameghiniana 50(4 (suppl.)):R11-R12 [M. Carrano/M. Carrano/M. Carrano] | |
| 77949 | I. A. Cerda, D. Pol, and A. Chinsamy. 2013. Osteohistological insight into the early stages of growth in Mussaurus patagonicus (Dinosauria, Sauropodomorpha). Historical Biology 26(1):110-121 [M. Carrano/M. Carrano] | |
| 35697 | J. F. Durand. 2001. The oldest juvenile dinosaurs from Africa. Journal of African Earth Sciences 33:597-603 [R. Butler/R. Butler/M. Carrano] | |
| 5974 | 5% 15020 | J. J. Moratalla and J. E. Powell. 1994. Dinosaur nesting patterns. In K. Carpenter, K. F. Hirsch & J. R. Horner (eds.), Dinosaur Eggs and Babies 37-46 [M. Carrano/M. Carrano/M. Carrano] |
| 82700 | D. Pol, A. C. Mancuso, R. M. H. Smith, C. A. Marsicano, J. Ramezani, I. A. Cerda, A. Otero and V. Fernandez. 2021. Earliest evidence of herd-living and age segregation amongst dinosaurs. Scientific Reports 11(1):20023:1-9 [M. Carrano/M. Carrano] |