Table 2.

Species examined for the Dual Origin of the Neocortex hypothesis

Reptiles	Agama, Zonurus, Gecko, Testudo, Chameleon			Dart (1934)
Mammals	Monotremes	Tachyglossus		Abbie (1940)
	Marsupials	Perameles		Abbie (1942)
	Placental	Rodents	Rat	Sanides (1970) and this paper
		Cetacean	Dolphin	Morgane et al. (1990)
		Felidae	Cat	Sanides and Hoffmann (1969)
		Primates	Slow loris	Sanides and Krishnamurti (1967)
			Squirrel monkey	Sanides (1968)
			Macaque	Pandya and Sanides (1973); Mesulam and Mufson (1982); Pandya and Barbas (1985); Pandya et al. (1988); Barbas and Pandya (1989) and this paper
			Human	Sanides (1962, 1964); Galaburda and Sanides (1980)

Note: Reep (1984) analyzed extensively data from the literature with new diagrams about the Dual Origin of the Neocortex in the following species: tachyglossus, opossum, hamster, mouse, rat, hedgegog, rabbit, sheep, cat, dog, tree shrew, galago, macaque, and human.