Pelvis morphology suggests that early Mesozoic birds were too heavy to contact incubate their eggs
@article{Deeming2018PelvisMS, title={Pelvis morphology suggests that early Mesozoic birds were too heavy to contact incubate their eggs}, author={D. Charles Deeming and G. Mayr}, journal={Journal of Evolutionary Biology}, year={2018}, volume={31} }
Numerous new fossils have driven an interest in reproduction of early birds, but direct evidence remains elusive. No Mesozoic avian eggs can be unambiguously assigned to a species, which hampers our understanding of the evolution of contact incubation, which is a defining feature of extant birds. Compared to living species, eggs of Mesozoic birds are relatively small, but whether the eggs of Mesozoic birds could actually have borne the weight of a breeding adult has not yet been investigated… CONTINUE READING
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