Original: Although almost every therocephalian lineage ended during the great Permianâ "Triassic extinction event, a few representatives of the subgroup called Eutherocephalia survived into the Early Triassic.
Simplified: Although almost every therocephalian lineage ended during the great Permianâ "Triassic extinction event, a few representatives of the subgroup (called Eutherocephalia) survived into the early Triassic and continued to diversify.