aplacental


Also found in: Dictionary, Thesaurus.
Related to aplacental: ovoviviparous, viviparous

aplacental

 [a″plah-sen´t'l]
having no placenta.

a·pla·cen·tal

(ā'pla-sen'tăl),
Without a placenta; denoting the monotremes (which lay eggs and have no placenta) and the marsupials (which have a transitory simple yolk-sac placenta).

aplacental

(ā′plə-sĕn′tl)
adj.
Having no placenta, as marsupials and monotremes.

aplacental

having no placenta.
References in periodicals archive ?
blainville) (Risso, 1826) is an aplacental viviparous shark living in tropical and temperate waters, whose distribution range includes the Mediterranean, the Eastern Atlantic from the Bay of Biscay to South Africa, and the Western Atlantic from the United States to Argentina (Cannizzaro et al.
Morphological and endocrine correlates of the reproductive cycle of the aplacental viviparous dogfish, Squalus acanthias.