Twins 101: Types Of Twins

Dichorionic, diamniotic, monochorionic, monoamniotic — wondering what it all means? We've broken it down.

Dichorionic Diamniotic

Fraternal or identical twins who have their own placenta and amniotic sac.

Photo: Megan Rojas / The Bump

Identical twins who share the same placenta but have different amniotic sacs.

Photo: Megan Rojas / The Bump

Identical twins who share the same placenta and amniotic sac.

Photo: Megan Rojas / The Bump