Author:
Downie,C.
Year:
1969
Title:
Palynology of the Chuaria Shales of the Grand Canyon.
Reference:
Downie,C. (1969) Palynology of the Chuaria Shales of the Grand Canyon. Four Corners Geological Society,5th Field Conference. Geology and Natural History of the Canyon. P. 121- 122
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Genus Species Country(Region) From To
Trachyoligotriletes Trachyoligotriletes planus Arizona Late Precambrian Early Cambrian