The oldest extant Greek codex, said to date from the 4th century, is the Codex Sinaiticus, a biblical manuscript written in Greek (see photograph).

Who invented a codex?

Julius Caesar may have been the first Roman to reduce scrolls to bound pages in the form of a note-book, possibly even as a papyrus codex. At the turn of the 1st century AD, a kind of folded parchment notebook called pugillares membranei in Latin became commonly used for writing in the Roman Empire.

Did Romans invent the codex?

Although the modern book is technically a codex, the term is used only for manuscripts. The codex was a Roman invention that replaced the scroll, which was the first book form in all Eurasian cultures.