--- title: Dimetrodon description: Four-legged dinosaur, 10' long, with a "sail" of bony spines and skin webbing on its back. date_pub: 2024-04-20T11:00:41.000-04:00 section: bestiary content_type: feature short_code: bd1d --- Four-legged dinosaur, 10' long, with a "sail" of bony spines and skin webbing on its back.