Fish, birds, crocodiles, insects, lizards, amphibians, and pretty much anything that isn't a mammal or gives live birth.
monotremes
The placenta.
through placenta attached to the uterine wall of the uterus via umbilical cord
Most do, some don't. A mammalian red blood cell lacks a nucleus.
Mammalian red blood cells lack a nucleus.Seive tube elements lack a nucleus.
Umbilicord is a flexible cord like structure that contains blood vessels and attaching a human/other mammalian fetus to the placenta during gestation.
The placenta is the part of the amniotic egg that supplies food to the developing animal. The yolk provides it with food, and the albumin supplies water and nutrients.The Yolk. Yolk is a sac that is attached to the embryo that supplies food.
It means not mammalian
The largest group of mammals are called placentals. These mammals are animals that during pregnancy have a placenta that feeds the incubating offspring.
Nitrobenzene has a nitro group.Benzene lacks that group
Clarithromycin is not a sulfur or sulfa drug because it lacks the sulfonamide group. It is a drug in the group of macrolide antibiotics.
Blood type O lacks the antigen proteins of A and B. Blood type O is the universal donor.
Monkeys are in the placental group of mammals which means that they have an internal placenta for development of embryo.