At the infamous Wikipedia I found the following list of pseudosciences and pseudo concepts, this seems like a rather incomplete list. What more could be added? Should any be deleted? Wouldn't/shouldn't Velikovsky and Sitchin be listed separately?

[en.wikipedia.org]

Anthropology and Archaeology

Ancient astronaut theories, theories that ancient extraterrestrial contact was involved in some way with the origin or development of human culture.

Lemuria, and Atlantis, the theory that sunken continents in the Indian, Pacific, and Atlantic Oceans were once home to lost civilizations.

Mount Ararat, the theory that the Biblical Noah's Ark was real and ended its journey on the mountain known now as Mount Ararat. Theories about the survival and location of Noah' Ark often form the core of creationist archaeological programs.

African Olmecs theory, the theory that the Olmec civilization, which was one of the earliest high civilizations of the Americas was of African origin. This theory is a part of the Afrocentric way of thinking.