![I Support You on Twitter: "Gross #placenta classifications are: discoid (humans, rodents), zonary (cats, dogs), cotyledonary (cows, sheep) & diffuse (horses, pigs). In the diagrams I've drawn, the red area shows the I Support You on Twitter: "Gross #placenta classifications are: discoid (humans, rodents), zonary (cats, dogs), cotyledonary (cows, sheep) & diffuse (horses, pigs). In the diagrams I've drawn, the red area shows the](https://pbs.twimg.com/media/Dljht04X4AYqypM.jpg)
I Support You on Twitter: "Gross #placenta classifications are: discoid (humans, rodents), zonary (cats, dogs), cotyledonary (cows, sheep) & diffuse (horses, pigs). In the diagrams I've drawn, the red area shows the
![Structural diversity of placentas as classified by the distribution of... | Download Scientific Diagram Structural diversity of placentas as classified by the distribution of... | Download Scientific Diagram](https://www.researchgate.net/publication/362579146/figure/fig1/AS:11431281078728163@1660232473299/Structural-diversity-of-placentas-as-classified-by-the-distribution-of-chorionic-villi.png)
Structural diversity of placentas as classified by the distribution of... | Download Scientific Diagram
![7 Diffuse Placenta (A), Cotyledonary Placenta (B), Zonary Placenta (C),... | Download Scientific Diagram 7 Diffuse Placenta (A), Cotyledonary Placenta (B), Zonary Placenta (C),... | Download Scientific Diagram](https://www.researchgate.net/publication/333773772/figure/fig53/AS:769548047376386@1560485960830/Diffuse-Placenta-A-Cotyledonary-Placenta-B-Zonary-Placenta-C-Monodiscoidal.png)
7 Diffuse Placenta (A), Cotyledonary Placenta (B), Zonary Placenta (C),... | Download Scientific Diagram
![A manual of zoology. Zoology. 562 CHORDATA chorion Jrondosnm, or diffuse placenta, which occurs in whales, pcrisso- dactylcs and many artiodactyles. On the other hand, the vilH may Ije restricted to A manual of zoology. Zoology. 562 CHORDATA chorion Jrondosnm, or diffuse placenta, which occurs in whales, pcrisso- dactylcs and many artiodactyles. On the other hand, the vilH may Ije restricted to](https://c8.alamy.com/comp/PG3N3W/a-manual-of-zoology-zoology-562-chordata-chorion-jrondosnm-or-diffuse-placenta-which-occurs-in-whales-pcrisso-dactylcs-and-many-artiodactyles-on-the-other-hand-the-vilh-may-ije-restricted-to-certain-places-becoming-very-strong-there-this-gives-rise-to-cotyledonary-discoidal-or-zonary-placenta-to-these-correspond-por-tions-of-the-uterine-lining-which-are-distinguished-from-the-rest-liy-ijc-coming-extremely-vascular-uterine-placenta-the-cotvhdonary-placenta-fig-6io-consists-of-many-small-placentar-patches-the-fyyfjoni-most-rmx-fig-6iocotylcdonan-placenta-a-PG3N3W.jpg)
A manual of zoology. Zoology. 562 CHORDATA chorion Jrondosnm, or diffuse placenta, which occurs in whales, pcrisso- dactylcs and many artiodactyles. On the other hand, the vilH may Ije restricted to
![Baton pass hypothesis: successive incorporation of unconserved endogenous retroviral genes for placentation during mammalian evolution - Imakawa - 2015 - Genes to Cells - Wiley Online Library Baton pass hypothesis: successive incorporation of unconserved endogenous retroviral genes for placentation during mammalian evolution - Imakawa - 2015 - Genes to Cells - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/a86c27b3-fd8f-495f-ade0-8a34800ad257/gtc12278-fig-0001-m.jpg)