Ultrastructure of the placentae of the natricine snake, Virginia striatula (Reptilia: Squamata).

@article{Stewart2003UltrastructureOT,
  title={Ultrastructure of the placentae of the natricine snake, Virginia striatula (Reptilia: Squamata).},
  author={James R Stewart and K. R. Brasch},
  journal={Journal of morphology},
  year={2003},
  volume={255 2},
  pages={
          177-201
        }
}
Virginia striatula is a viviparous snake with a complex pattern of embryonic nutrition. Nutrients for embryonic development are provided by large, yolked eggs, supplemented by placental transfer. Placentation in this species is surprisingly elaborate for a predominantly lecithotrophic squamate reptile. The embryonic-maternal interface consists of three structurally distinct areas, an omphalallantoic placenta and a regionally diversified chorioallantoic placenta. The chorioallantoic placenta… CONTINUE READING