Важнейшие особенности внутриутробного развития двугорбого верблюда

Abstract

The authors show the most important primitive peculiarities in intrauterine development of the Tylopoda order to which Camelus bactrianus belongs; they are: free development of the amnion in the uterine cavity; folding of the amnion, prolonged existence of the yolk-sac placenta, high degree of entodermal allantois development; primitive character of the allantoid placenta; presence of the primitive system of placental hormones. According to all the mentioned characters, development of Tylopoda sharply differs from the development even-toyed ungulate ruminents.