Tartessian inscriptions are in the Southwestern script, which is also known as the Tartessian or South Lusitanian script. Like all other Paleo-Hispanic scripts, except for the Greco-Iberian alphabet, Tartessian uses syllabic glyphs for plosive consonants and alphabetic letters for other consonants. Thus, it is a mixture of an alphabet and a syllabary that is called a semi-syllabary. Some researchers believe these scripts are descended solely from the Phoenician alphabet, but others think that the Greek alphabet had an influence as well.