Not sure if anyone can help identify this. I’ve recently purchased a 2.5ha property in Freginals, a province of Tarragona in Catalonia, Spain. I was walking around the land and came across what looks like a fossil. Sorry, I didn’t have a ruler with me for scale but I would estimate the length to be approximately 2m. I have a few more close up photos but I'm back in the UK at the moment so I can't take anymore at the moment.
It appears to be a raft of laminated slitstone caught up in a landslide (almost certainly submarine, like the sediments themselves), causing it to become brecciated (broken into sharp-angled fragments). But it could also have become fragmented during much later tectonic events. It is difficult to tell without looking closely at the matrix between the fragments and the edges of the fragments.