Species Placental Forms and Types
| Order
|
Species
|
Placental Form
|
Maternal-fetal Interface
|
Maternal-fetal Membrane
|
| Primates
|
Ape, Human
|
Discoid
|
Villi
|
Haemochorial
|
| Rhesus
|
Bidiscoid
|
Villi
|
Haemochorial
|
| Tupaia
|
Bidiscoid
|
Labyrinth
|
Endotheliochorial
|
| Galago
|
Diffuse
|
Folded
|
Epitheliochorial
|
| Artiodactyla
|
| pig
|
Diffuse
|
Folded
|
Epitheliochorial
|
| sheep
|
Cotyledonary
|
Villi
|
Epithelio- & Syndesmo-chorial
|
| Cow, ?goat
|
Cotyledonary
|
Villi
|
Epitheliochorial
|
| Rodentia
|
| guinea pig
|
Discoid
|
Labyrinth
|
Haemomonochorial
|
| rat, mouse
|
Discoid
|
Labyrinth
|
Haemotrichorial
|
| Beaver
|
Discoid
|
Labyrinth
|
Hemodichorial
|
| Lagomorpha
|
rabbit
|
Discoid
|
Labyrinth
|
Haemochorial
|
| Carnivora
|
dog, cat
|
Zonary
|
Labyrinth
|
Endotheliochorial
|
| Perissodactyla
|
horse
|
Diffuse, spec.
|
Villi, "cups"
|
Epitheliochorial
|
| Cetacea
|
Whale, dolphin
|
Diffuse
|
Villi
|
Epitheliochorial
|
| Sirenia
|
Manatee
|
Zonary
|
Labyrinth
|
Haemochorial
|
| Chiroptera
|
bat
|
Discoid
|
Labyrinth
|
Endotheliochorial Occas. Hemochorial
|
| Insectivora
|
Europ. Mole
|
Discoid
|
Labyrinth
|
Haemochorial
|
| Scalopus
|
Diffuse
|
Labyrinth
|
Haemochorial
|
| Table based upon Comparative Placentation Links: placenta
|
|
