From the Permian period, the “two measures of teeth” Dimetrodon comes from the synapsids or “fused arch” family of mammal-like reptiles and went extinct 40 million years before the first dinosaurs appeared. It sported a mouth of sharp teeth for catching fish and probably used its large sail to either help cool its body or as part of its courtship display.

Materials & Tools

• Bulky-weight yarn in blue (225 yds/206m), tan (150 yds/138m), medium brown (75 yds/69m), black (5 yds/5m) and white (2 yds/2m)
• Hook size H (5mm) or I (5.5mm)
• Tapestry needle
• Scissors
• Large straight or marking pins
• Polyester fiberfill
• (2) 12mm plastic safety eyes
• Stitch markers / safety pins
• Optional: 18-in. (46cm) 18-gauge paper-wrapped stem wire