Some of these languages were documented directly through inscriptions, mainly in Paleohispanic scripts, that date for sure between the 5th century BC, maybe from the 7th century in the opinion of some researchers, until the end of the 1st century BC or the beginning of the 1st century AD.
Other Paleohispanic languages[which?] can only be identified indirectly through toponyms, anthroponyms or theonyms cited by Roman and Greek sources.
Of these languages, Celtiberian, Gallaecian, Lusitanian, and presumably Sorothaptic were Indo-European languages; Celtiberian and Gallaecian were Celtic languages, and Lusitanian may also have been, but the hypothetical Sorothaptic was not. Aquitanian was a precursor of Basque, while Tartessian and Iberian remain unclassified.6
Sinner, Alejandro G.; Velaza, Javier (5 March 2019). Palaeohispanic Languages and Epigraphies. Oxford University Press. doi:10.1093/oso/9780198790822.001.0001. ISBN 978-0-19-879082-2. 978-0-19-879082-2 ↩
"Sorothaptic". ISO 639-3. Summer institute of linguistics. "MultiTree entry for Sorothaptic". https://iso639-3.sil.org/code/sxo ↩
Coromines, Joan (1976). Els ploms sorotàptics d'Arles [The sorotaptic leads of Arles] (in Catalan). pp. 142–216. /wiki/Joan_Coromines ↩
Brill's New Pauly, 2008, p. 50 ↩
Martines, Josep (2020). "General Lexicon". In Argenter, Joan A.; Lüdtke, Jens (eds.). Manual of Catalan Linguistics. Berlin: Walter de Gruyter. pp. 311–350. ISBN 978-3-11-044831-3. 978-3-11-044831-3 ↩
Broderick, George (2010). "Die vorrömischen Sprachen auf der iberischen Halbinsel" [The pre-Roman languages of the Iberian Peninsula]. In Hinrichs, Uwe (ed.). Das Handbuch der Eurolinguistik [The Eurolinguistics Handbook] (in German) (1st ed.). Wiesbaden, Germany: Otto Harrassowitz Verlag. pp. 304–305. ISBN 978-3-447-05928-2. 978-3-447-05928-2 ↩