Cuneiform

Cuneiform
Cuneiform was used by the Sumerians. It consists of many strokes and was a pictographic alphabet. The Ohnes that captured Daniel in the episode Fire and Water used this language.

In the episode the Ohnes called Nems said that his mate Omoroca went to Babylon to convince the Tau'ri that the Goa'uld were not Gods. This might be evidence that the Ohnes brought the language to the Sumerians.