The lowercase looptail ‘g’ is perhaps the most poorly understood letter of the alphabet. Its serif form has an extremely intricate architecture that virtually nobody knows how to write these days.
‘a’, there are two accepted ways to write the letter ‘g’. On the left below is the “proper” form, called the looptail or double story ‘g’. The script form (right) is much less common, and is generally only found in sans serif and decorative typefaces (and even then only occasionally). But since it is much easier to draw than the looptail ‘g’, most people handwrite the script ‘ɡ’. In proper serif type, this ‘ɡ’ is exceedingly rare. In fact, the only place this construction is found is as a phonetic glyph, and very few fonts include IPA support.
|Linux Libertine is one of the few fonts (commercial or free) that contain the phonetic ‘ɡ’ along with the alphabetic ‘g’|