Rancho Grande (USNM): Late Albian - Early Turonian, Honduras
collected by B. Simonson 1971
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Iguanodontidae
|
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| 1 specimen | ||||||||||
| USNM 181339 | ||||||||||
| Weishampel and Weishampel 1983 | ||||||||||
| Horne 1994 | ||||||||||
| or Hadrosauridae indet. | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Honduras | State/province: | Comayagua |
| Coordinates: | 14.7° North, 87.5° West (view map) | ||
| Paleocoordinates: | 21.2° North, 61.3° West (Wright 2013) | ||
| Basis of coordinate: | stated in text | ||
| Altitude: | 900 meters | ||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous - Late Cretaceous |
| Stage: | Albian - Turonian | 10 m.y. bin: | Cretaceous 4 - Cretaceous 6 |
| Key time interval: | Late Albian - Early Turonian | ||
| Age range of interval: | 106.3 - 89.8 m.y. ago |
Stratigraphy
| Geological group: | Valle de Angelis | Formation: | Esquias | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "lower red beds" of this group, formation name variable | |||||
Lithology and environment
| Primary lithology: | gray,blue claystone |
| Secondary lithology: | red sandstone |
| Includes fossils? | Y |
| Lithology description: "thin layer of blue-grey claystone interbedded in a succession of red siltstone and sandstone strata" | |
| Environment: | fluvial-lacustrine indet. |
| Glacial or sequence phase: | transgressive |
| Geology comments: "fluvial conditions mellowing from piedmont plain to floodplain, with localized lacustrone or lagoonal-marine embayments." | |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
| Disassociated major elements: | all |
| Fragmentation: | frequent |
| Temporal resolution: | snapshot |
Collection methods and comments
| Collection methods: | surface (in situ),field collection | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | USNM | ||
| Collectors: | B. Simonson | Collection dates: | 1971 |
| Collection method comments: collected by Bruce M. Simonson | |||
Metadata
| Database number: | 51681 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2005-06-09 14:23:40 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2005-06-09 14:23:40 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 13840. | ETE | G. S. Horne, M. G. Atwood, and A. P. King. 1974. Stratigraphy, sedimentology, and paleoenvironment of Esquias Formation of Honduras. The American Association of Petroleum Geologists Bulletin 58(2):176-188 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 13749 | ETE | G. S. Horne. 1994. A mid-Cretaceous ornithopod from central Honduras. Journal of Vertebrate Paleontology 14(1):147-150 [M. Carrano/M. Carrano/M. Carrano] |
| 61518 | D. B. Weishampel and J. B. Weishampel. 1983. Annotated localities of ornithopod dinosaurs: implications to Mesozoic paleobiogeography. The Mosasaur 1:43-87 [M. Carrano/M. Carrano] |