Well goodness, I sat for a good hour researching to find out what species of oak your acorn was from, and I found nothing! Great post though, and acorns rock!
I love the little hats they wear.
They're so nice and round!
k -- almost definitely a red oak, or maybe a chestnut oak. Believe in the Internet!http://www.livinglandsandwaters.org/milliontrees/oakacorn_id.pdf