The stomach lymphatic channel of all classes of vertebrata representatives beginning from cartilagnous fish, was discovered. The lymphatic channel of cartilaginous and bony fish is presented only with lymphatic capillaries. The lymph is removed along peri- and paravascular lymphatic capillaries. The channel of the stomach of amphibians and reptiles is differentiated in lymphatic capillaries and lymphatic small trunks, while in birds and mammalia it is differentiated in lymphatie capillaries and lymphatic vessels. In human beings, macacus, dogs and cats the removing lymph pathways of the stomach wall in ontogeny undergo the following stages: 1) a lymphatic capillary, 2) a "wide" lymphatic capillary and 3) a lymphatic vessel. These stages are considered to be recapitulation of the developing process of the removing lymph pathways in vertebrate phylogenesis. The stomach lymphatic channel in vertebrate species examined is lined with a continous layer of endothelium cells.