Buff, who wrote these articles? Do you know? Anthropologists? I doubt it. They are not credible at all.
And you are right that lucy is not the most credible skeleton. they have found even better skeletons that prove our evolutionary past. I believe their used to be more than one species of "human" on earth. We are not unique, we just survived.
Later i will post you some links to back up my argument, but i have to go to school now. They will be from credible sites, i promise.
Why are you so stubborn to take the bible literally. I personally am athiest/agnostic but i can respect most anyones religios views. I cannot however understand how anyone can take the bible literally. Its insane. People crafted these theories to try to understand what they could not explain scientifically, and to keep order in society. They are not true.