El Cien Formation
| El Cien Formation | |
|---|---|
| Stratigraphic range: Oligocene-Miocene | |
| Type | Geologic formation |
| Sub-units | Cerro Colorado Mb. San Hilario Mb. Cerro Tierra Blanca Mb. |
| Location | |
| Region | Baja California Sur |
| Country | Mexico |
The El Cien Formation is a geologic formation in eastern Baja California Sur state, Mexico.[1]
Subunits, from younger/higher to older/lower, include the Cerro Colorado Member, San Hilario Member, and Cerro Tierra Blanca Member.[1]
Fossil content
It preserves fossils dating back to the Oligocene epoch of the Paleogene period and Early Miocene epoch of the Neogene period, during the Cenozoic Era.[1][2]
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Cetaceans
| Cetaceans of the El Cien Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Image |
| Calafiacetus[3] | C. longipinna | Baja California Sur, Mexico | A chaeomysticete | |||
| Echericetus[4] | E. novellus | Baja California Sur, Mexico | A eomysticetid cetacean | |||
| Kaaucetus[5] | K. thesaurus | Baja California Sur, Mexico | A aetiocetid cetacean | |||
| Niparajacetus[6] | N. palmadentis | Baja California Sur, Mexico | A aetiocetoid cetacean | |||
| Tlaxcallicetus[7] | T. guaycurae | Baja California, Sur, Mexico | A chaeomysticete | |||
See also
References
- 1 2 3 UNAM.mx: "The El Cien Formation, Strata of Oligocene and Early Miocene Age in Baja California Sur" Archived 2015-12-12 at the Wayback Machine; Revista vol 6, no. 2, 1986; pg 145-162; National Autonomous University of Mexico, Institute of Geology.
- ↑ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021.
- ↑ Solis-Añorve, A.; Buono, M. R.; Díaz-Cruz, J. A.; Schwennicke, T.; Aguilar-Cruz, C. A.; Gonzalez-Barba, G. (2026). "A new chaeomysticete from the Late Oligocene of Baja California Sur, Mexico: expanding the diversity of early baleen whales". Journal of Systematic Palaeontology. 24 (2) 2693556. doi:10.1080/14772019.2026.2693556.
- ↑ Hernández-Cisneros, A. E.; Schwennicke, T.; Rochín-Bañaga, H.; Tsai, C.H. (2024). "Echericetus novellus n. gen. n. sp. (Cetacea, Mysticeti, Eomysticetidae), an Oligocene baleen whale from Baja California Sur, Mexico". Journal of Paleontology. 97 (6): 1309–1328. doi:10.1017/jpa.2023.80.
- ↑ Hernández-Cisneros, A. E. (2022). "A new aetiocetid (Cetacea, Mysticeti, Aetiocetidae) from the late Oligocene of Mexico". Journal of Systematic Palaeontology. 20 (1) 2100725. doi:10.1080/14772019.2022.2100725. S2CID 251966097.
- ↑ Azucena Solis-Añorve; Gerardo González-Barba; René Hernández-Rivera (2019). "Description of a new toothed mysticete from the Late Oligocene of San Juan de La Costa, B.C.S., México". Journal of South American Earth Sciences. 89: 337–346. Bibcode:2019JSAES..89..337S. doi:10.1016/j.jsames.2018.11.015. S2CID 133937023.
- ↑ Atzcalli Ehécatl Hernández Cisneros (2018). "A new group of late Oligocene mysticetes from México". Palaeontologia Electronica. 21 (1): 1–30. doi:10.26879/746.