Middle Ordovician Kanosh Shale

Millard County, Utah

Acritarchs (microscopic, presumably eukaryotic cells that probably represent resting cysts of green algae) from the late middle Ordovician Kanosh Shale, western Millard County, Utah, a number of miles east of the eastern border of White Pine County, Nevada. Specimens: Top row, left to right: (1) Asteridium sp. ; (2) Digitoglomus minutum; (3) D. minutum; (4) Gorgonisphaeridium sp; (5) Micrhystridium stellatum. Second row--left to right: (6) Passalosphaera minuta; (7) Petaloferidium sp.; (8) Turpisphaera heteromorpha; (9) Turpisphaera heteromorpha. Third row--left to right: (10) Dictyotidium vietulum; (11) D. vietulum; (12) Melikeriopalla sp.; (13) Dicommopalla macadamii. Bottom row--left to right: (14) Dicommopalla; (15) Dicommopalla sp.; (16) Loeblichia heterorhabda; (17) L. heterorhabda. Scale bar is 10 microns long--0.00039 of an inch. Photograph courtesy Marco Vecoli, John H. Beck, and Paul K. Strother; I edited and processed the image through photoshop.

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