BROAD FOOTPRINT. “The transposon BovB – first found in cows (hence the bovine epithet) – is also present in anoles, opossums, platypuses, wallabies, horses, sea urchins, silkworms and zebrafish, to name a few.”
https://aeon.co/essays/genes-that-jump-species-does-this-shake-the-tree-of-life