cleavage between 0-4 days?
dichorionic diamniotic (fused or separate placentas)
cleavage between 4-8 days?
monochorionic diamniotic
cleavage between 8-12 days?
monochorionic monoamniotic
cleavage after 13 days?
monochorionic monoamniotic conjoined twins
monochorionic diamniotic
4-8 days
monochorionic monoamniotic conjoined twins
after 13 days
dichorionic diamniotic
0-4 days
monochorionic monoamniotic
8-12 days