TRILOBITES OF THE WHIRLWIND FORMATION:

The Whirlwind Formation is just below the Swazey Limestone.

Trilobites:

HOUSE RANGE, UTAH

Ehmania sp.

Ehmaniella waptaensis

Ehmaniella fronsplanata fronsplanata

Elrathiella decora

Elrathiella euthyopsis

Kootenia? margodistincta

Trachycheilus granulosus

Tympanuella transversa

DRUM MOUNTAINS, UTAH

Ehmaniella waptaensis

Elrathiella decora

Elrathiella dugwayensis

Elrathiella euthyopsis

Kootenia dawsoni

Trachycheilus granulosus

Elrathiella whirlwindensis drumensis

Elrathiella whirlwindensis whirlwindensis

Tympanuella transversa

REFERENCES:

Sundberg, Frederick A.; 1994. Corynexochida and Ptychopariida (Trilobita,Arthropoda) of the Ehmaniella Biozone (Middle Cambrian), Utah and Nevada. Natural History Museum of Los Angeles County - Contributions in Science, No.446 

*researched and compiled by James Cook