Sentence:  Evolutionary psychology often seems to be stuck in a <WSD>warp</WSD> on the grassy African plains, even though we know that early humans didn't stay on the Savannah but moved from around 2 million years ago out of Africa into quite different terrains. 
Meaning of the word marked with <WSD> tags:  A situation or place which is or seems to be from another era; a time warp.