Can you Id these splits?

I have a few standing dead trees that I can cut down and am curious as to the tree type. I had thought that it may be Sycamore but am not sure. Also, there is a round core in the middle of each round (you can see it in the picture). If anyone give some insight on the wood type it would be greatly appreciated.

just a guess cedar?

That 5 nipple knot on it tells me it IS sycamore . IF it weren't for that it wood be unidentifiable or maybe PUNK WOOD!

Sycamore has a really distinct ray pattern when it's split or quartersawn. If you split it you may see something that looks like this:

http://www.denoon.com/images/gallery/paneling/pan_quarterSawn.jpg

(not my site, just found this using Google)

Also- I agree with Lees- those spiky bits remind me of the sycamore I was burning last year.

Josh