| This middle Cambrian trilobite from Nevada is a specimen of the species Elrathina antiqua. The trilobite genus Elrathia is almost unknown in Nevada.
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Location: | Schell Creek Mountains, Egan Range, Ely, Nevada | ||
| Size Trilobite: | about 27 mm long | ||
| Age: | Middle Cambrian,, Unnamed unit equivalent to the Wheeler or Marjum Fm. (ca. 520 Y.o.) | ||