Las Tablas Bay: Late/Upper Maastrichtian, Chile
collected by R. Casamiquela 1950
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Plesiosauria
- Elasmosauridae
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Aristonectinae indet.
Otero et al. 2012
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Otero et al. 2012 | 1 individual | ||||||||
| SGO.PV.260 (postcranial articulated skeleton preserving 21-23 cervical vertebrae, 19-21 dorsal, 3-4 sacral, and 24-25 caudal vertebrae, four partial limbs, complete left portion of the pectoral girdle and part of the right portion, almost complete sequence of dorsal vertebral column, dorsal ribs and gastralia, and most of the pelvic girdle) | ||||||||||
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= Aristonectes sp.
Cabrera 1941
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Otero and O'Gorman 2013 | |||||||||
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Mauisaurus sp.
Hector 1874
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Otero et al. 2010 | 2 individuals | ||||||||
| SGO.PV.135 and 169 - 2 individuals (almost complete left femur and proximal portion of another left femur) | ||||||||||
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= Aristonectes quiriquinensis
Otero et al. 2014
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Otero et al. 2015 | |||||||||
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Reptilia
- Mosasauridae
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Mosasaurinae indet.
Gervais 1853
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Otero 2021 | 1 element | ||||||||
| SGO.PV.6619, a single terminal vertebra | ||||||||||
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Chondrichthyes
- Rajiformes
- Sclerorhynchidae
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Ischyrhiza chilensis
Wetzel 1930
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Bivalvia
- Cardiida
- Cardiidae
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Cardium acuticostatum
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Otero et al. 2012 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Chile |
| Coordinates: | 36.6° South, 73.1° West (view map) |
| Paleocoordinates: | 38.6° South, 60.9° West |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Late/Upper Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Quiriquina |
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | bioturbation,glauconitic,green,yellow sandstone |
| Includes fossils? | Y |
| Lithology description: Formation consists of a basal conglomerate, cross-bedded yellow sandstones with conglomerate lenses, coquinaceous horizons and green sandstones at top that include concretionary nodules | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
| Preservation of anatomical detail: | variable |
| Fragmentation: | frequent |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | R. Casamiquela | Collection dates: | 1950 |
Metadata
| Also known as: | Quiriquina Island | ||
| Database number: | 91416 | ||
| Authorizer: | M. Uhen, M. Carrano, P. Mannion | Enterer: | M. Uhen, P. Mannion, M. Carrano |
| Modifier: | P. Mannion | Research group: | vertebrate |
| Created: | 2009-09-22 06:56:47 | Last modified: | 2021-04-12 03:28:02 |
| Access level: | the public | Released: | 2009-09-22 06:56:47 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 30785. | M. E. Suárez and H. Cappetta. 2004. Sclerorhynchid teeth (Neoselachii, Sclerorhynchidae) from the Late Cretaceous of the Quiriquina Formation, central Chile. Revista Geológica de Chile 31(1):89-103 [M. Uhen/M. Uhen/M. Uhen] |
Secondary references:
| 76351 | R. A. Otero. 2021. First record of a mosasaurine mosasaur from the upper Maastrichtian of central Chile. Cretaceous Research 125:104838 [P. Mannion/P. Mannion/P. Mannion] | |
| 44142 | R. A. Otero and J. P. O'Gorman. 2013. Identification of the first postcranial skeleton of Aristonectes Cabrera (Plesiosauroidea, Elasmosauridae) from the upper Maastrichtian of the south-eastern Pacific, based on a bivariate graphic analysis. Cretaceous Research 41:86-89 [P. Mannion/P. Mannion/P. Mannion] | |
| 85609 | R. A. Otero, J. P. O'Gorman, and N. Hiller. 2015. Reassessment of the upper Maastrichtian material from Chile referred to Mauisaurus Hector, 1874 (Plesiosauroidea: Elasmosauridae) and the taxonomical value of the hemispherical propodial head among austral elasmosaurids. New Zealand Journal of Geology and Geophysics 58(3):252-261 [P. Mannion/P. Mannion] | |
| 37396 | R. A. Otero, S. Soto-Acuña, and D. Rubilar-Rogers. 2010. Presence of the elasmosaurid plesiosaur Mauisaurus in the Maastrichtian (Late Cretaceous) of central Chile. Acta Palaeontologica Polonica 55(2):361-364 [P. Mannion/P. Mannion] | |
| 42723 | R. A. Otero, S. Soto-Acuña, and D. Rubilar-Rogers. 2012. A postcranial skeleton of an elasmosaurid plesiosaur from the Maastrichtian of central Chile, with comments on the affinities of Late Cretaceous plesiosauroids from the Weddellian Biogeographic Province. Cretaceous Research 37:89-99 [P. Mannion/P. Mannion] |