Fort Fun Indiana
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...and became snakes.
By this time, the hind limbs were also becoming all but useless in these species. Models that used that energy elsewhere or not at all came to dominate (leading to reduction in the hind limbs as well).
Not surprisingly, this fossil find was predicted by evolutionary biologists.
Snake-like fossil lacking forelimbs but with hind limbs may represent transitional evolution
A trio of researchers with the National Museum of Natural History, Smithsonian Institution, the University of Calgary and Carleton University, respectively, has found a snake-like fossil that may represent a creature in transition from four legs to none. In their paper published in the journal...
phys-org.cdn.ampproject.org
By this time, the hind limbs were also becoming all but useless in these species. Models that used that energy elsewhere or not at all came to dominate (leading to reduction in the hind limbs as well).
Not surprisingly, this fossil find was predicted by evolutionary biologists.