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Table 2 Comparative characters on Pampatherium humboldtii (MHD-P-28), glyptodonts and armadillos endocast

From: Digital endocranial cast of Pampatherium humboldtii (Xenarthra, Cingulata) from the Late Pleistocene of Uruguay

 

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

  1. Data of glyptodonts and armadillos from Tambusso and Fariña (2015)