Heads or tails first? Evolution of fetal orientation in ichthyosaurs, with a scrutiny of the prevailing hypothesis
According to a longstanding paradigm, aquatic amniotes, including the Mesozoic marine reptile group Ichthyopterygia, give birth tail-first because head-first birth leads to increased asphyxiation risk of the f...
Source: BMC Evolutionary Biology - Category: Molecular Biology Authors: Feiko Miedema, Nicole Klein, Daniel G. Blackburn, P. Martin Sander, Erin E. Maxwell, Eva M. Griebeler and Torsten M. Scheyer Tags: Research Source Type: research
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