原生 | yuán shēng | original / primary / native / indigenous / proto- / stock (firmware) | |
祖语 | zǔ yǔ | proto-language / parent language (linguistics) | |
盲鳗 | máng mán | hagfish (jawless proto-fish of class Myxini) | |
八目鳗 | bā mù mán | lamprey (jawless proto-fish of family Petromyzontidae) | |
七鳃鳗 | qī sāi mán | lamprey (jawless proto-fish of family Petromyzontidae) |