Sierra Madre Formation
| Sierra Madre Formation | |
|---|---|
| Stratigraphic range: Aptian-Santonian | |
| Type | Geologic formation |
| Overlies | Santiago Formation |
| Lithology | |
| Primary | Marine limestones |
| Other | Dolomite |
| Location | |
| Region | Chiapas |
| Country | Southwestern Mexico |
| Type section | |
| Named for | Sierra Madre de Chiapas |
The Sierra Madre Formation is a geologic formation in Chiapas state, southern Mexico. It consists of marine dolomites and limestones.
Fossil record
The formation preserves fossils dating back to the Cretaceous period. [1] Pepemkay, a Late Cretaceous prehistoric ray-finned fish, were found in the formation. Other prehistoric fish fossils, found in quarries near the Municipality of Ocozocoautla de Espinosa, include Macrosemiids (Macrosemiocotzus species), Clupeomorphs (Triplomystus applegatei and Paraclupea-like species), and Alepisauriformes (Saurorhamphus and Enchodus species) [2] [3]
See also
References
- ^ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 8 July 2014.
{{cite web}}:|author=has generic name (help); Unknown parameter|deadurl=ignored (|url-status=suggested) (help) - ^ "The fossil fishes from the Sierra Madre Formation, Ocozocoautla, Chiapas, Southern Mexico"; Palaeontologia Electronica 12(2.4A) · January 2009, by Jesus Alvarado-Ortega.
- ^ "A Cenomanian aipiochthyoid fish (Teleostei, Acantomorpha) from America, Zoqueichthys carolinae gen. and sp. nov. from El Chango quarry (Cintalapa Member, Sierra Madre Formation), Chiapas, Mexico"; by Adriana López-Arbarello & Jesús Alvarado Ortega.
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