From the very end of the Cretaceous period, this “fused lizard” earned its name because various bones in its body were fused, resulting in one very rugged dinosaur. The thick armor covering its back is similar to the back of a crocodile, with bones forming within the skin. Along with rows of spikes and a 10-foot-long tail complete with club, this heavily armored dinosaur had good reason to keep up its defenses with hungry neighbors like the Tyrannosaurus.

Materials & Tools

• Bulky-weight yarn in dark green (225 yds/206m), tan (150 yds/138m), medium brown (150 yds/138m), dark brown (75 yds/69m), and black (10 yds/10m).
• 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