Table 1 Relative size of olfactory bulbs (ob), cerebrum (cer) and cerebellum (cbl) expressed as percentage of total endocast volumen in Pampatherium humboldtii and other extinct and extant cingulates, and encephalization quotients calculated from the equation of all mammals (EQt) and from the equation of xenarthrans only (EQx)
ob (%) | cer (%) | cbl (%) | EQt | EQx | |
|---|---|---|---|---|---|
Pampatherium humboldtii | 8 | 68.6 | 23.4 | 0.27 | 0.64 |
Glyptodon sp.a | 7.4 | 64.8 | 27.8 | 0.16 | 0.47 |
Glyptodon sp.a | 4.8 | 65.1 | 30.0 | 0.23 | 0.61 |
Panochthus tuberculatus a | 9.7 | 63.8 | 26.5 | 0.22 | 0.60 |
Doedicurus clavicaudatus | 8.4 | 63.8 | 27.8 | 0.12 | 0.39 |
Pseudohoplophorus absolutus a | 5.7 | 65.2 | 29.2 | 0.40 | 0.84 |
Dasypus novemcinctus a | 10.7 | 65.4 | 23.9 | 0.44 | 0.59 |
Dasypus hybridus a | 7.3 | 67.8 | 24.9 | 0.44 | 0.62 |
Zaedyus pichiy a | 10.6 | 70.7 | 18.7 | 0.55 | 0.64 |
Chaetophractus villosus a | 9.5 | 72.1 | 18.4 | 0.61 | 0.82 |
Euphractus sexcinctus a | 10.1 | 70.3 | 19.7 | 0.55 | 0.80 |