Red Deer Cave people could be separate human species
Whether or not they are technically classified as a separate human species they were still human beings. From a creationist perspective they would be off chutes of the human race that live during the post flood ice age about 5000 thousand years ago. The relatively few individuals found and the degree of fragmentation of the remains makes claiming them to be an entirely separate human species a bit of a stretch. They could have just as well have been a small isolated family group whose traits could be a result of inbreeding.