Hello,
I'm new to this forum so apologies if this is the wrong place to post this or if it has been posted before. I found it on reddit's 40kLore and found it interesting. It's in Realm of Chaos: the Lost and the Damned. User Onething123456 posted this photo from his copy and it had a lot of stuff about the Shamans that I had never seen before so I thought I'd share it here.
I personally love all the pre-history stuff.
Edit: I cannot post links in my first post so I'll add it as a comment.
Automatically Appended Next Post: https://imgur.com/dImnK6j