Loss of genes implicated in gastric function during platypus evolution

Fun fact: as if they weren't weird enough, monotremes (platypus, echidna) are the only known mammals to lack a stomach https://t.co/HZGus5XDZ8 Easy reads: https://t.co/cXpYJr3tiN https://t.co/EWNMDhnlH5

@krishnamku I came across this fact in the book "Why Evolution is True" by Jerry Coyne. But you can find more information on several websites and papers. https://t.co/C1HFf00Dz4 https://t.co/0WMAZlzBAL

RT @pillarist: @marick And holy crap TIL https://t.co/am0n76Jjvt

This is not a primitive feature, but loss of a strongly conserved ancestral feature. see https://t.co/wgJz5Bvxy1 Similarly echidnas and modern platypuses lack teeth although their ancestors had teeth. In fact it has just occurred to me that these two thin