35 – 50 cm
Small and slender
10-35 micrometers
Amoeboid
8-10 cm
Cylindrical
Up to 16 feet (4.9 meters)
Streamlined
7-10 cm
Stocky with a short, robust body
20 to 26 cm
Coiled shell with tentacles
Approximately 5.3 to 5.9 feet (1.6 to 1.8 meters)
Similar to modern humans
24-30 inches (61-76 cm)
Large and muscular
Short to medium length
Medium-sized, muscular
Ranges from 18 to 40 inches
Long and slender
Up to 8 feet (2.4 meters)
3-4 cm
Slender
Up to 180 cm
Large and robust
20-25 cm
Small and compact
20-24 inches
Medium-sized
110-150 cm
Up to 28 inches
Large and sturdy
8-12 cm (3-4.7 inches)
Slender with a long tail, short limbs, and smooth skin