Usno Formation

Usno Formation
Usno Formation
Stratigraphic range: Pliocene
Type	Geological formation
Unit of	Omo Group
Underlies	Kalam Formation
Overlies	Mursi Formation
Lithology
Primary	Sandstone
Location
Coordinates	5°18′N36°00′E / 5.3°N 36.0°E
Approximate paleocoordinates	5°06′N35°42′E / 5.1°N 35.7°E
Country	Ethiopia
Extent	Omo Subbasin ; Turkana Basin
	Usno Formation (Ethiopia)

Last updated July 05, 2025

The Usno Formation is a palaeontological formation located in Ethiopia. It dates to the Pliocene period.^[1]

Geology

Paleofauna

References

↑ Boaz, N. T., Howell, F. C., & McCrossin, M. L. (1982). Faunal age of the Usno, Shungura B and Hadar Formations, Ethiopia. Nature, 300(5893), 633–635. https://doi.org/10.1038/300633A0

Vickers-Rich, Patricia & Rich, Thomas Hewett (1993); Wildlife of Gondwana. Reed. ISBN 0-7301-0315-3

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[1] Boaz, N. T., Howell, F. C., & McCrossin, M. L. (1982). Faunal age of the Usno, Shungura B and Hadar Formations, Ethiopia. Nature, 300(5893), 633–635. https://doi.org/10.1038/300633A0

[1]

Usno Formation

Contents

Geology

Paleofauna

See also

References