Visual Design: Ninety-five things you need to know. Told in Helvetica and Dingbats. (Creative Core Book 1)

by Jim Krause

Serif (also called Roman) typefaces—as their name suggests—have serifs. Serifs are rectangular, tapered, pointed, rounded, straight, arched, thin, thick, or blocky shapes projecting from the end of a letter’s stroke(s).