BrandonRobert Nicholls.
Joel Kontinen
According to evolution, mammals have the largest brain size of all animals. After the death of the dinosaurs, they grew. It was only later, in the in the Eocene that brain size began to increase.
In Paleocene fossils show that this period the fossils were likely driven by a need for greater cognition in increasingly complex environments. This led to the highly encephalized brains of today, including those of humans.
This is just a show of Darwinian speculation without any proof.
Source:
Vignieri , Sacha et al. 2022, Body first Science 31 March.
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