All were bipedal judging by pelvises, heel bones etc. unlike modern apes such as chimps (brain size 300-500cc)
H. neanderthalensis average brain size similar to H. Sapiens (us), 1450 cc
H. Erectus avg. brain size 900cc (750-1225cc as get more recent)
H. Habilis avg. brain size 650cc (500-800cc as get more recent)
Ardipithecus ramidus 450cc (we have the pelvis, skull, left leg, both arms of a specimen)
Sources
http://www.talkorigins.org/faqs/homs/species.html
Nat. Geographic July 2010
I'm an atheist btw. Just curious what non-atheists think
H. neanderthalensis average brain size similar to H. Sapiens (us), 1450 cc
H. Erectus avg. brain size 900cc (750-1225cc as get more recent)
H. Habilis avg. brain size 650cc (500-800cc as get more recent)
Ardipithecus ramidus 450cc (we have the pelvis, skull, left leg, both arms of a specimen)
Sources
http://www.talkorigins.org/faqs/homs/species.html
Nat. Geographic July 2010
I'm an atheist btw. Just curious what non-atheists think