The Turduli were an ancient celtiberian tribe akin to the Lusitanians, living in the south of modern Portugal, in the east of the province of Alentejo, along the Guadiana valley. The Celtiberians dwelt in the Iberian Peninsula and spoke a Celtic language. ... The Lusitanians were a tribe, or various tribes, from the western Iberian peninsula, who spoke a Lusitanian language until the conquest of their territory by the Romans. ... Alentejo is a south-central region of Portugal. ... Guadiana (Latin Anas, Spanish Guadiana, Portuguese Guadiana) - one of the major rivers of Spain, part of it is the border with Portugal, ends in the Atlantic Ocean. ...
The excentric localization of Turduli and Celtics populations is owed to a joint expedition (originated from the Guadiana) that is mentioned by Strabo.
After several misfortunes (including the death of a leader) this expedition scattered itself, with the Turduli occupying the area between the Douro and the Vouga, and the Celts occupying Galicia.
The Lusitanians managed somehow to break the siege imposed by the coastal cities and by the neighbouring tribes, and thus they soon were the dominant power of all the maritime region between the Tagus and the Cantabrian seas, becoming, according to Strabo, "the strongest of all of the Iberian nations".
Granted that perhaps Adam's bones, had someone articulated them into a skeleton, might have lacked a rib on one side, it does not necessarily follow on that account that all men are lacking a rib as well.
Aristotle attributed only eight ribs to humans, and was ready to allow that certain members of the race of the Turduli were born with only seven ribs on each side, provided he established this on the actual testimony of some suitable authority.
But as in the latter instance Aristotle was willing to support his opinion only with the testimony of others, it is also not unlikely that in the former instance he ascribed eight ribs to man on hearsay evidence, and in this manner wrongly handed down to us something he had not seen.