Amorphous globosus

Instead of a normally developed fetus, it results in the formation of a more or less spherical structure covered with hairy skin, which contains parts of all three germ layers; the differentiation of its contents can vary greatly.

An amorphus globosus is not viable due to the lack of functional organs.

[2] The teratological reasons for the development of amorphus globosus are not fully understood, but it is believed that the malformation is generally associated with twin gestation,[3] in which one embryo does not develop normally.

[2] It occurs most commonly in cattle, but there are also case reports in goats[2] and horses.

[7] A case of amorphus globosus has also been described in human medicine, where it was also a twin pregnancy.