PLATE

ASAPHISCUS Meek, 1873. Asaphiscus wheeleri Me e k (x3. 0). Wheeler Formation, M. Cambrian, Antelope Springs, Millard County, Utah. (Collected by Afton Fawcett. RLS coll., now at FMNH.) In thi s gro up, Asaphiscus is associated with Elrathia kingii.

Asaphiscus wheeleri Meek (xl.7). Same origin as for preceding plate (RLS coll., now at FMNH.) This is an extraordinarily large specimen. Photograph printed from color slide. The original specimen is black.

Family Menomonidae Walcott, 1916

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