An early giraffe ancestor’s unique head and neck fossils suggest sexual selection as an alternative explanation for the evolution of modern giraffes’ long necks. Learn more:
Since Darwin’s time, the giraffe has been held up as a classic example of adaptive evolution. The fact that they browse high in the canopy, due to their long necks, has been considered a direct result of selection for this form of foraging. Wang. describe a new Miocene giraffoid species with helmet-like headgear and complex head and neck joints indicative of intense head-butting combat. They argue that selection for such combat also played a role in shaping the group’s long necks.
O values, with some individuals occupying an isotopic niche differing substantially from others in the fossil community. This indicates thatwas an open-land grazer with multiple sources of water intake, and their habitats likely included areas that were difficult for other contemporary herbivores to make use of.provide another example for understanding the neck evolution in giraffoids.
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