Las Tetas de Cabra Formation explained

Las Tetas de Cabra Formation
Type:	Formation
Age:	Wasatchian ~
Period:	Paleogene
Prilithology:	Sandstone
Otherlithology:	Siltstone
Namedfor:	Loma las Tetas de Cabra
Region:	Baja California
Coordinates:	28.7°N -114.1°W
Paleocoordinates:	31.1°N -97°W

The Las Tetas de Cabra Formation is a geologic formation in Mexico. It preserves fossils dating back to the Wasatchian of the Early Eocene period.^[1]

Fossil content

The following fossils have been reported from the formation:^[1]

Mammals

Acreodi

• Dissacus sp.^[2]
• Wyolestes iglesius

Artiodactyls

• Diacodexis cf. gracilis

Cimolesta

• cf. Esthonyx sp.^[3]

Didelphimorphia

• Esteslestes ensis

Ferae

• cf. Oxyaena sp.

Glires

• ?Paramyidae indet.

Hyaenodonta

• Prolimnocyon sp.

Pantodonta

• Caenolambda jepseni^[4]

Perissodactyls

• Eohippus cf. angustidens^[3]

Placentalia

• Ectocion ignotum
• Meniscotherium chamense^[4]
• Phenacodus vortmani
• cf. Hyopsodus sp.

Theriiformes

• Ferae indet.^[5]

Reptiles

• cf. Saniwa sp.
• Boidae indet.
• Iguanidae indet.

Amphibians

• Caudata indet.

Fish

• cf. Galeorhinus sp.

Invertebrates

Gastropods

• Gastropoda indet.

Flora

• Celtis sp.^[6]
• Chenopodiaceae indet.^[6]
• Heliantheae indet.^[6]
• Ulmaceae indet.^[6]

Wasatchian correlations

Wasatchian correlations in North America

Formation																Tetas de Cabra						Ypresian (IUCS) • Itaboraian (SALMA) Bumbanian (ALMA) • Mangaorapan (NZ)
Basin		Piceance	Colorado Plateau	Wind River	Green River																	align=center rowspan=14
Copelemur	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
Coryphodon	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
Diacodexis	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
Homogalax	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
Oxyaena	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
Paramys	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
Primates	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
Birds	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
Reptiles	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
Insects	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
	align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center		align=center
	Alluvial-fluvio-lacustrine	Fluvial				Fluvial	Fluvio-lacustrine	Fluvial	Lacustrine		Fluvio-lacustrine		Deltaic-paludal	Shallow marine		Fluvial	Shallow marine	Fluvial		Fluvial
Volcanic	Yes	No							Yes	No	Yes	No	Yes	No						Yes	No

See also

• List of fossiliferous stratigraphic units in Mexico

References

Bibliography

Notes and References

1. http://www.fossilworks.org/cgi-bin/bridge.pl?action=displayStrata&geological_group=&formation=Las%20Tetas%20de%20Cabra&group_formation_member=Las%20Tetas%20de%20Cabra Las Tetas de Cabra Formation
2. Alroy, 2002
3. Morris, 1966
4. Lucas, 1998
5. Novacek et al. 1991
6. Novacek et al., 1987