Zoology having a zonary placenta, as the Carnivora and other mammals: opposed to discoplacental.
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the world > animals > mammals > group Placentalia > [adjective] > having specific kind of placenta
cotyledonal1850
zonoplacental1879
cotyledonary1888
1879 tr. A. de Quatrefages de Bréau Human Species xi. 109 Man, apes, bats, insectivora, and rodents..form a natural group to which no zonoplacental, and, of course, no indeciduate mammals can be admitted.