It's been speculated that prior to base ten (or maybe alongside it) people used base twelve (using knuckles) hence anachronisms like dozens (inches, hours), 60 (minutes) and 360 (degrees), etc.
Not correct, the frequency of multiples of 12 in human counting is thought to be because of the lunar cycle and that each human hand has 12 phalanges -- aka finger bones -- in the fingers excluding the thumb. See how the Chinese count to ten on one hand, using a combination of thumb and fingers, bent for some numbers, for six to ten. There are very few languages with a duodecimal system.