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
|
|