Over the years I have designed a number of letterbat fonts, fonts in which the letters are made up of objects such as feet, hands, safety pins, pipes, and bugs. In 2012 I tried to make one from dinosaur tracks but abandoned it because it just did not work.
Recently I published a maze book with a maze that had walls made of dinosaur footprints. To make this maze, I elongated the footprints from the unsuccessful font. I then realized that the narrower footprints would make much better letters than my attempt in 2012. The end result was DinoTracks.
DinoTracks is readable at small point sizes, though at small sizes seeing that the letters are made of footprints is difficult. It is available on FontSpring.