A specimen of the trilobite Olenoides exhibiting a healed bite mark

Olenoides serratus (ROM 54365). Nearly complete individual; presumed carcass with healed injury on left thorax. Specimen length = 65 mm. Specimen dry – direct light (left) and coated with ammonium chloride sublimate to show details (right). Trilobite Beds on Mount Stephen.

Photos: Jean-Bernard Caron

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