Английская Википедия:Gracias Formation
The Gracias Formation is a geologic formation in Honduras. The mainly sandstones, siltstones and claystones preserve vertebrate fossils dating back to the Neogene period.[1]
Description
The Gracias Formation is a sedimentary unit, consisting of sandstone, siltstone, claystone and a few conglomeratic beds. The formation crops out in western Honduras and ranges from Шаблон:Convert in thickness. The formation overlies the Padre Miguel Group, while it is overlain by Pleistocene basalts.[2] The Padre Miguel Group provided the provenance for the sedimentary material for the Gracias Formation. The clasts in the formation are largely composed of rhyolite, rhyodacite, pumice, vitric ash, quartz, feldspar, and minor biotite fragments.[3]
Fossil content
- Borophagus secundus
- Calippus hondurensis[4]
- Cormohipparion ingenuum
- Procamelus cf. grandis
- Prosthennops cf. serus
- Protolabis cf. heterodontus
- Pseudoceras skinneri
- Rhynchotherium cf. blicki
- Teleoceras sp.
- Rhinocerotidae indet.
See also
References
Bibliography
Further reading
- E. C. Olson and P. O. McGrew. 1941. Mammalian fauna from the Pliocene of Honduras. Bulletin of the Geological Society of America 52:1219-1244
- S. D. Webb and S. C. Perrigo. 1984. Late Cenozoic Vertebrates from Honduras and El Salvador. Journal of Vertebrate Paleontology 4(2):237-254
- ↑ Gracias Formation at Fossilworks.org
- ↑ N.N., s.a., Informe de Apoyo, A-9
- ↑ Sánchez Barreda, 1999, p.25
- ↑ Hulbert, 1988, p.272
- Английская Википедия
- Geologic formations of Honduras
- Neogene Honduras
- Sandstone formations
- Siltstone formations
- Shale formations
- Paleontology in Honduras
- Lempira Department
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
