What on earth is this?

starrysky

Hi everyone, you have been very helpful to me so far with my adventures in my new garden. I found another plant today, with unexpected thorns! Can anyone tell me what it is? 

nutcutlet

one of the Brambles, Rubus species

starrysky

Thank you! I have never seen leaves like that on a bramble.

ju1i3

neither had I, cut-leaf blackberry? Rubus laciniatus

Gardenmaiden

Think its an ornamental blackberry.