P. humboldtii | Glyptodonts | Armadillos | |
---|---|---|---|
Olfactory bulbs type | Pedunculate | Pedunculate | Sessile |
Olfactory bulbs size | Large | Large | Large |
Cerebrum length/width ratio | 1.1 | 0.9–1.1 | 0.7–0.9 |
Cerebrum length/height ratio | 1.2 | 1.3–1.5 | 0.9–1.1 |
Rhinal fissure | Continuous | Continuous | Anterior and posterior |
Suprasylvian sulcus | Present | Present | Present |
Presylvian sulcus | Absent | Absent | Present |
Cerebellum size | Large | Very large | Large |
Cerebellum length/width ratio | 0.3 | 0.4–0.55 | 0.3–0.6 |
Ossified cerebellar tentorium | Complete? | Absent? | Posteromedial |