What Is a Zonary Placenta

Zonary: The placenta takes the form of a complete or incomplete band of tissue surrounding the fetus. Seen in carnivores like dogs and cats, seals, bears, and elephants. Discoid: A single placenta is formed and is discoid in shape. Seen in primates and rodents.

Who has Zonary placenta?

A zonary placenta consists of a belt-shaped band of tissue surrounding the fetus, and is typically found in carnivores. Other animals with this type of placenta include cats and mustelids, a family of carnivores including the weasel, badger, marten and ferret.

What are the 2 types of placenta?

Mammalian placentas are classified into two types according to the fetal membrane including to chorion, yolk sac placenta (choriovitelline placenta) and chorioallantoic placenta.