The Babylonian system was sexagesimal, thus (18) --
This whole class seems to cling to sites of Phoenician trade, and to keep clear of Greece and the north -- perhaps a Phoenician form of the 129 system, avoiding the sexagesimal multiples.
The Babylonians adopted 60 for both these purposes, thus giving us the sexagesimal division of angles and of time.
The Greeks originally used unit-fractions, like the Egyptians; later they introduced the sexagesimal fractions of the Babylonians, extending the system to four or more successive subdivisions of the unit representing a degree.
In the sexagesimal system the numerators of the successive fractions (the denominators of which were the successive powers of 60) were followed by', ", "', ", the denominator not being written.