His colleagues in the librarianship were Alexander of Aetolia and Lycophron of Chalcis, to whom were allotted the tragic and comic writers respectively, Homer and other epic poets being assigned to Zenodotus.
[1] Although he has been reproached with arbitrariness and insufficient knowledge of Greek, his recension undoubtedly laid a sound foundation for future criticism.
Having collated the different manuscripts in the library, he expunged or obelized doubtful verses, transposed or altered lines, and introduced new readings.
It is probable that he was responsible for the division of the Homeric poems into twenty-four books each, and possibly was the author of the calculation of the days of the Iliad in the Tabula Iliaca.
[1] In addition to his other scholarly work, Zenodotus introduced an organization system on the materials in the Library of Alexandria whereby texts were assigned to different rooms based on their subject matter (verse or prose, literary or scientific), and the various sub-classifications within each.