Researchers say the sperm whale birth is among the first pieces of evidence of a non-primate animal participating in a ...
March 26 (Reuters) - When a mother sperm whale gives birth, it is a remarkable team effort. Marine biologists have documented ...
3D simulation of the birth canal of chimpanzees with (B) the fetal head in a fully extended position, the typical head alignment in apes, and (C) the fetal head in a fully flexed position, the usual ...
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