Cañadón Las Horquetas, estancia Laguna Palacios: Cenomanian - Turonian, Argentina
collected by R. D. Martínez
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Compsognathidae
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| 5 individuals | ||||||||||
| "intermediate between basal tetanurans and Coelurosauria" but "probably a true coelurosaur" (12 measurements) | ||||||||||
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= Aniksosaurus darwini n. gen., n. sp.
Martínez and Novas 2006
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Martínez and Novas 2006 | |||||||||
| MDT-PV 1/48 | ||||||||||
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Reptilia
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| Martínez 1999 | 1 individual | |||||||||
| MDT-PV 2, skull and neck | ||||||||||
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= Sarmientosaurus musacchioi n. gen., n. sp.
Martínez et al. 2016
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Martínez et al. 2016 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Chubut |
| Coordinates: | 44.8° South, 69.2° West (view map) | ||
| Paleocoordinates: | 44.2° South, 35.8° West (Wright 2013) | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Cenomanian - Turonian | 10 m.y. bin: | Cretaceous 5 - Cretaceous 6 |
| Key time interval: | Cenomanian - Turonian | ||
| Age range of interval: | 100.5 - 89.8 m.y. ago |
Stratigraphy
| Geological group: | Chubut | Formation: | Bajo Barreal | Member: | Lower |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: ca. 15 m from bottom of Lower Member (49 m total thickness) | |||||
Lithology and environment
| Primary lithology: | planar lamination,fine,quartzose,intraclastic,green sandstone |
| Secondary lithology: | tuff |
| Includes fossils? | Y |
| Lithology description: "volcanic tuff"; Ibiricu et al 2013: "fine, quartzose sandstone with clay intraclasts in a horizon with an unconformable base and parallel lamination" "sandstone"; Ibiricu et al 2013: "The specimens were embedded in a fining-upward, green sandstone, with an uncomfortable lower contact" | |
| Environment: | crevasse splay |
| Geology comments: "deposition by a unidirectional, low-energy, overbank fluvial deposit, specifically a floodplain deposit produced by the lateral migrating fluvial channel. A fluvial environment is additionally indicated by the superposition of sandstone tabular bodies with coarse sandstones and tuff interclasts.""a[n] overbank mantle deposit associated to a low-sinuosity fluvial system." | |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | -single event |
| Size of fossils: | macrofossils |
| Spatial orientation: | preferred |
| Preservation of anatomical detail: | good |
| Associated major elements: | some |
| Disassociated major elements: | many |
| Size sorting: | poor |
| Fragmentation: | occasional |
| Bioerosion: | occasional |
| Feeding/predation traces: | tooth marks |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,surface (in situ),mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collectors: | R. D. Martínez |
Metadata
| Also known as: | Aniksosaurus type, Sarmientosaurus type | ||
| Database number: | 70674 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2007-04-02 07:48:12 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2007-04-02 07:48:12 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 23711. | ETE | R. D. Martínez and F. E. Novas. 1997. Un nuevo tetanuro (Dinosauria: Theropoda) de la Formación Bajo Barreal (Cretácico Superior), Patagonia [A new tetanuran (Dinosauria: Theropoda) from the Bajo Barreal Formation (Upper Cretaceous), Patagonia]. Ameghiniana 34(4):538 [M. Carrano/M. Carrano] |
Secondary references:
| 76241 | G. A. Casal, R. D. Martínez, L. M. Ibiricu, B. González Riga, and N. Foix. 2013. Tafonomía del dinosaurio terópodo Aniksosaurus darwini, Formación Bajo Barreal, Cretácico Tardío de Patagonia (Argentina) [Taphonomy of the theropod dinosaur Aniksosaurus darwini, Bajo Barreal Formation, Late Cretaceous of Patagonia (Argentina)]. Ameghiniana 50(6):571-592 [M. Carrano/M. Carrano] | |
| 46840 | L. M. Ibiricu, R. D. Martinez, G. A. Casal and I. A. Cerda. 2013. The behavioral implications of a multi-individual bonebed of a small theropod dinosaur. PLoS ONE 8(5):e64253:1-11 [P. Mannion/J. Tennant/M. Carrano] | |
| 85644 | R. D. Martínez. 1999. Un cráneo y cuello articulado de Sauropoda (Dinosauria: Saurischia) del Cretácico Superior de Chubut [An articulated skull and neck of Sauropoda (Dinosauria: Saurischia) from the Upper Cretaceous of Chubut]. XIV Jornadas Argentinas de Paleontología de Vertebrados, Neuquén y Plaza Huincul, 18 al 20 de mayo de 1998, Resúmenes. Ameghiniana 36(1):105 [M. Carrano/M. Carrano] | |
| 23710 | ETE | R. D. Martínez and F. E. Novas. 2006. Aniksosaurus darwini gen. et sp. nov., a new coelurosaurian theropod from the early Late Cretaceous of central Patagonia, Argentina. Revista del Museo Argentino de Ciencias Naturales, nuevo serie 8(2):243-259 [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] |