FIGURE 1 in Injured trilobites within a collection of dinosaurs: Using the Royal Tyrrell Museum of Palaeontology to document Cambrian predation

FIGURE 1. Gabriellus kierorum specimens from the (?)Rosella Formation. A, B. Gabriellus kierorum with truncation of left pleural spines on the fifth and sixth thoracic segment (TMP.1983.021.0034). A: Complete specimen. B: Close up of abnormality (white arrows). C–E: Gabriellus kierorum with bilaterally expressed thoracic abnormalities (TMP.1983.021.0039). C: Complete specimen. D: Close up of abnormality on the left side of the specimen (white arrows) and the partly recovered spine (black arrow). E: Close up of abnormality on the right side of the specimen (white arrows).