A placenta in which the villi clumped together into circular patches called cotyledons. The fetal cotyledon meets with maternal regions called caruncles to form the placentome where maternal-fetal exchanges take place. [ http://www.luckyhit.net/goats001.htm http://www.vivo.colostate.edu/hbooks/pathphys/reprod/placenta/structure.html ]
Term information
Multiple, discrete areas of attachment called cotyledons are formed by interaction of patches of allantochorion with endometrium. The fetal portions of this type of placenta are called cotyledons, the maternal contact sites (caruncles), and the cotyledon-caruncle complex a placentome