Footprint?

[EvanPenn]

This rock was found in Upstate New York, almost certainly in Devonian shale. It looks sort of like a footprint, but I wasn’t aware that large dinosaurs even existed in the Devonian, so it is dubious. Any opinions? Thanks, Evan. 

[Kane]

Worm burrows or other marine bed ichnofossils. Definitely no dinos in the Devonian. 

[Rockwood]

They aren't really in good enough condition to be sure, but the larger forms look a bit like rusophycus.