Hornitos, Cerro Algarrobito: Campanian - Maastrichtian, Chile
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Titanosauridae
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| lL humerus, rib fragments | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Chile | State/province: | Atacama |
| Coordinates: | 28.0° South, 70.3° West (view map) | ||
| Paleocoordinates: | 28.7° South, 50.4° West (Wright 2013) | ||
| Basis of coordinate: | stated in text | ||
| Altitude: | 1575 meters | ||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Campanian - Maastrichtian | 10 m.y. bin: | Cretaceous 7 - Cretaceous 8 |
| Key time interval: | Campanian - Maastrichtian | ||
| Age range of interval: | 83.6 - 66 m.y. ago |
Stratigraphy
| Formation: | Hornitos | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: originally "lower third of the Upper Cretaceous" | |||||
Lithology and environment
| Primary lithology: | concretionary calcareous "limestone" |
| Secondary lithology: | sandstone |
| Includes fossils? | Y |
| Lithology description: "The rocks...correspond to sandstones, limestones, conglomerates, and caliches, intercalated with lavas and andesitic breccias and various volcanic rocks. Between these last is a conspicuous layer of rhyodactitic litic tuff, which could reach 10 m thickness...The bones appear in a marly limestone stratum 10 m thick with decimeter-sized calcareous concretions. The smallest pieces were found as rollings, whereas the larger piece was included in the limestone." (translation, M. Carrano) | |
| Environment: | terrestrial indet. |
| Geology comments: described as "continental sediments" on the map legend | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Articulated whole bodies: | none |
| Associated major elements: | none |
| Disassociated major elements: | some |
| Disassociated minor elements: | some |
| Fragmentation: | extreme |
| Encrustation: | none |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 35282 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2003-11-24 07:43:10 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2003-11-24 07:43:10 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 9498. | G. Chong Diaz. 1985. Hallazgo de restos oseos de dinosaurios en la Formación Hornitos – Tercera Region de Atacama – Chile. IV Congreso Geologico Chileno 152-161 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 85633 | J. Iriarte, K. Moreno, D. Rubilar and A. Vargas. 1999. A titanosaurid from the Quebrada La Higuera Formation (Upper Cretaceous), III Región, Chile. Ameghiniana 36(1):102 [M. Carrano/M. Carrano] | |
| 55605 | P. Salinas, L. G. Marshall, and P. Sepúlveda. 1991. Vertebrados continentales del Paleozoico y Mesozoico de Chile [Continental vertebrates of the Paleozoic and Mesozoic of Chile]. Actas del VI Congreso Geológicao Chileno, Viña del Mar 310-313 [M. Carrano/M. Carrano] |