Circumstancial argument: I know that going into university, I knew what archaeology and paleontology were, but not anthropology, so if I was in a rush/sloppy trying to find an archaeology course, "anthropology" alone might have thrown me off - and I certainly had friends who were less careful choosing their courses than me. OTOH, my careers advisor could have easily corrected me, and this sounds like there's a chance you'll get undergraduates that actually aren't interested in the material, unless there are archaeology-focussed courses among the more general anthropology courses.

My actual undergrad course was from the Computer Science department, but was in Computer Science with Machine Learning (until I switched to CS to avoid a dumb requirement, but kept the same modules.) I might have taken a course somewhere else if Machine Learning wasn't highlighted in any way, as I wouldn't have known that Aberystwyth had ML specialists. However, I'm pretty sure your department must have Nautical Archaeology courses, which would have solved that issue (for me.)