Carter, A M Placentation in the colugos Cynocephalus volans and Galeopterus variegatus (Dermoptera) and the transition from labyrinthine to villous placentation in primates. [electronic resource] - Placenta Jul 2017 - 47-53 p. digital Publication Type: Journal Article ISSN: 1532-3102 Standard No.: 10.1016/j.placenta.2017.05.006 doi Subjects--Topical Terms: AnimalsBiological EvolutionEutheria--anatomy & histologyFemalePlacenta--anatomy & histologyPlacentationPregnancyYolk Sac--growth & development