Trilobites became extinct during the mass extinction event at the end of the Permian period.
Trilobites became extinct at the end of the Permian period, approximately 250 million years ago, during a mass extinction event. This extinction event, known as the end-Permian extinction, led to a significant loss of marine and terrestrial species, with trilobites being among the casualties due to factors like volcanic activity and global warming.
https://brainly.com/question/37759469