Juan C. Gutiérrez-Marco, Manuel Valério, and Artur A. Sá with some of the giant trilobites found in Portugal. Photo credit Manuel Valerio/Arouca Geopark.
- Juan C. Gutiérrez-Marco, Manuel Valério, and Artur A. Sá with some of the giant trilobites found in Portugal. Photo credit Manuel Valerio/Arouca Geopark.
- The largest specimen of Ogyginus forteyi, which, if it were not curled-up, would measure almost three feet long. Photo credit Manuel Valerio/Arouca Geopark.
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