Biology 1st Edition by Jerome Krueger, Kendra Hill, Robert Noyd

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Birds, reptiles, and amphibians have a cloaca that is the opening for the intestinal, reproductive, and urinary tracts (see Fig. for comparison of systems). Male turtles have a penis housed inside the cloaca. When turtles mate, the male deposits sperm into the female's cloaca. In terms of reproductive organs, in females the cloaca would be similar to what mammalian organ?
Figure Comparison of reproductive structures. Although the reproductive strategies, patterns, and behaviors of animals are diverse, the structure of their reproductive systems is similar. Notice in each of these diagrams the series of paired gonads (testes and ovaries), ducts, and glands that are used to produce and release gametes. (a) Insect. (b) Amphibian. (c) Mammal.