Hadrocodium
= Hadrocodium
{c}
An Early <Jurassic> <mammaliaform> with a small skull documenting changes in the jaw, ear attachment and braincase. <A new mammaliaform from the early Jurassic and evolution of mammalian characteristics by Zhe-Xi Luo and others>[Science 292, pp. 1535–1540; Hadrocodium skull and jaw comparisons]{ref}