Mostly complete trilobites from the lower Cambrian Carrara Formation, Inyo County, California.

Top top to bottom: Olenellus terminatus; photograph courtesy George Walter Ast.

Bristolia parryi (a mold); photograph courtesy Irene Walls.

Peachella iddingsi and an isolated cephalon of a the same genus-species--photograph courtesy Andy Secher and Martin A. Shugar.

Mesonacis; photograph courtesy an indididual who goes by the cybername "dinoruss."