8-14 inches
Small to medium
Varies
30-33 cm
Small to medium-sized
9-14 inches
2.7 m (8.9 ft)
Large and robust
Approximately 2.5 to 3.5 meters
Powerfully built with a large head and strong limbs
3-4 inches
Large and robust with a wingspan of 4-6 inches
6.3-7.9 inches (16-20 cm)
Slender with a medium-length tail
Up to 12 inches (30 cm)
Long and segmented
Up to 2 meters (6.6 feet)
Sleek and slender with a long and thin body
Up to 60 cm (24 inches)
Flattened body with a bony plate covering the head
Up to 26 feet
Large and bulky
6-8 meters
2.1 to 3.5 meters
Large, similar to modern elk
58-68 cm
Medium-sized, muscular
10 to 12 inches
Small and sturdy
Up to 24 inches (61 cm)
Streamlined and elongated
5 to 30 cm (2 to 12 inches)
Compact body with long limbs and a prehensile tail