Aplacentata at English => English (Websters 1913) Of Explained:
Aplacentata \Ap`la*cen*ta"ta\, n. pl. [Pref. a- not + placenta.]
(Zo["o]l.)
Mammals which have no placenta.
Aplacentata \Ap`la*cen*ta"ta\, n. pl. [Pref. a- not + placenta.]
(Zo["o]l.)
Mammals which have no placenta.