Casual Friday — watching arachnids evolve

In this video from the Peabody Museum’s Travels in the Great Tree of Life exhibit, the left side of the animation shows a phylogenetic tree of selected arachnids (spiders, scorpions, and their relatives); the right side shows an animation that of what the ancestral species may have looked like at different points in the tree.

So basically you take the features of existing species at the tips of this “tree,” then map them back in time to get an idea for where major evolutionary changes likely occurred. Blend this all together in “morphing” software, and you get this wonderful video.

H/T: Myrmecos

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