Lamellar blade?

[autographcollector11]

Hi all,
I came across this piece not too far from the broken preform a few posts ago. It's chert, but looks pretty close to a lamellar blade. I have found a lot of flakes over the last few months, but this one is a bit different.
What do you think ? I included a picture of a blade from one of my publications.....thoughts?
from Illinois.....

 

[rok-kolektor]

 

[rok-kolektor]

I find the same blade at all my spots and ive always been curious about what they are....my pics suck cause of phone

 

[rok-kolektor]

 

[rok-kolektor]

Here's another one, more detail to it...

 

[rok-kolektor]

Backside of last pic

 

[rok-kolektor]

One in the first pic has a smooth back...