The Taraises Formation is a
geologic formation
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...
in northern
Mexico
Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...
. It preserves
fossils
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...
dating back to the
Early Cretaceous
The Early Cretaceous (geochronology, geochronological name) or the Lower Cretaceous (chronostratigraphy, chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 143.1 ...
, including ammonites.
See also
*
List of fossiliferous stratigraphic units in Mexico
This is a list of stratigraphic units (groups, formations and members), containing fossils and pertaining to the North American country of Mexico.
List
See also
* Lists of fossiliferous stratigraphic units in North America
References
...
References
External links
*
Geologic formations of Mexico
Cretaceous Mexico
Lower Cretaceous Series of North America
{{Cretaceous-stub