The Carbonera Formation is a geologic formation in Mexico. 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 in ...

dating back to the Berriasian to Hauterivian stages of the

Early Cretaceous The Early Cretaceous ( geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma. Geology Pro ...

period.

Fossil content

The following fossils were reported from the formation: ;Ammonites * '' Maderia casitensis'' * '' Mexicanoceras laticostatum'' * '' M. multicostatum'' * '' ?Hemihoplites mexicanus'' * '' cf. Phylloceras serum'' * '' Distoloceras sp.'' ;Bivalves * '' Exogyra reedi'' * '' Plicatula pulchra'' * '' Gryphaea sp.'' ;Gastropods * '' Vermetus cornejoi'' * '' Pleurotomaria sp.'' ;Brachiopods * '' Ptilorhynchia (Proteorhynchia) durangensis'' ;Corals * '' Paretallonia hispaniensis''

References

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Bibliography

* M. R. Sandy. 1990. Early Cretaceous brachiopods from Mexico and their paleobiogeographic significance. Journal of Paleontology 64(6):942-956 * R. W. Imlay. 1940. Neocomian Faunas of Northern Mexico. Geological Society America Bulletin 51(1):117-190 Geologic formations of Mexico Lower Cretaceous Series of North America Cretaceous Mexico Berriasian Stage Hauterivian Stage Valanginian Stage Sandstone formations Shale formations Shallow marine deposits Paleontology in Mexico

Fossil content

See also

References

Bibliography