| prototheria | (n) echidnas; platypus, Syn. subclass Prototheria |
| prototherian | (n) primitive oviparous mammals found only in Australia and Tasmania and New Guinea |
| Prototheria | ‖n. pl. [ NL., from Gr. |
| 原獣類 | [げんじゅうるい, genjuurui] (n) prototherians [Add to Longdo] |