Across
- 1. increased heterodont dentition, complete bony secondary palate, enlarged brain structure
- 3. absence of epipubic bones, presence of true patella
- 6. adults lack teeth, reptile-like gait
- 7. symmetrical foot to allow for bipedal lifestyle, 3-fingered hands, jaw kinesis
- 8. epipubic bone to support pouch
Down
- 2. socketed teeth, fourth trochanter, antorbital and mandibular fenestrae
- 4. perforate acetabulum, antitrochanter on ilium prominent, quadrate head exposed laterally, many other bone features
- 5. (birds) s-shaped curved neck, hollow thin-walled bones, erect, digitgrade (ankle held off the ground), flexible wrist with a semi-lunate carpal (wrist bone)
- 7. mammal-like reptiles; arms underneath for support off the ground, loss of lumbar ribs