Mothers & Daughters : mengerti?

in two dimensions (with added colors), looks like butterflies, but in three dimension, it's hominid pelvis configurations, from Lovejoy, 2005, fig. 5


...attention: this post is considered veiled...
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She and her rainforest ancestors: hanging, standing or sitting while plucking/tree climbing/bipedal wading/quadrupedal walking on knuckles and feet but no swimming/diving/back-floating. Note the huge biceps/triceps and long arms but short legs, and long fingers-toes but short palm-sole and hyper-erect ear pinnae, lack of subcutaneous fat, hyper-trophic muscles, very short achilles tendon.
11 yr old female


She and our seashore ancestors: standing, sitting or mid-dive while plucking/cliff climbing and bipedal shoreside beachcombing wading and walking and running/swimming/diving/back-floating. Note the long legs but short arms, long flat palm-sole (paddle-like) but short toes, slightly erect ear pinnae and long hydrodynamic scalp hair, subcutaneous fat, (comparatively) atrophic muscles, very long achilles tendon. [Note: wearing high-heeled shoes daily causes shrinkage of the achilles tendon, best to combine with barefoot walking and stretching]
10 yr old female


Newborn infant: mother grips branch, eats birth mucus and afterbirth (same as deer), infant no fat layer, face emerges ventrally.
http://www.youtube.com/watch?v=JfVnFJDjUyQ


Newborn infant: mother immersed, does not eat mucus or afterbirth (same as dolphin), infant SC fat layer, face emerges dorsally. (midway through and end of video)
http://www.youtube.com/watch?v=XyL1Hak2xwY


labour progression and birth of human, bipedal-linear pelvic structure requires newborn to rotate on axis, no other primate does this. The afterbirth remains viable and continues to pump blood and oxygen for a minute after birth, allowing extended full submersion of infant. This may indicate that the human ancestral condition was a slow birth, semi-immersed in warm water.
http://youtube.com/watch?v=3aPusn8Hj5o

One way to flip a breech baby?: handstand (vertical diving posture) in water http://www.youtube.com/watch?v=oQvDXy-6Kzs&mode=related&search

Hominid pelvis structure and bipedalism (but lacks semi-aquatic information)
http://www.wannabe-anthropologist.com/wba_writing_pelvis.php

Human vs chimp pelvic structure, birth process
http://weber.ucsd.edu/~dkjordan/resources/clarifications/HumanBirth.html#

Pregnant mums swimming, diving, back-floating: (big tummies, Spanish vid)
http://www.youtube.com/watch?v=l80jkfQK_uA&feature=related

380,000,000 year old mother placoderm giving birth, umbilical cord present internal.
http://scienceblogs.com/pharyngula/2008/05/materpiscis_attenboroughi.php
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(I've no idea why I put this here, rather than in the arc.)