[Openurmind]

From what I understand it is all dependent on the time frame. Sizes started to get smaller as they moved from Megafuana to smaller game. And the progression from Spears to Atlatl and Darts to Arrows the same. Guess they had to make the weapons fit the game available as time went along.

[MtnClimber]

There is a variation on the Clovis point that is called a Cumberland point. It is fluted like a Clovis, but is flared at the base. I have four nice examples with most around 5 inches long. They look like this: