It is somewhat surprising that accurate information concerning the urogenital systems and cloacae of male and female turtles is not readily available to the student of comparative anatomy. Literature pertaining to the urogenital system of turtles is concerned mostly with species alien to North America, and is mainly in foreign publications; also, most illustrations do not give clear or precise impressions of these structures. The information available either is of a too general nature and includes somewhat superficial observations on numbers of species, or is concerned with only a single aspect of the entire system. In view of this, it appears that additional observations on the urogenital systems of male and female turtles with special reference to the cloacal region may be of general interest, and also of some value in establishing specific sexual differences. Thanks are due to Dr. P. L. Risley, under whose direction the work was undertaken, for guidance and sincere interest in the observations and preparation of this report, and to Dr. F. B. Moreland for the supply of Emys blandingii used.
Proceedings of the Iowa Academy of Science
©1940 Iowa Academy of Science, Inc.
Nicholson, Frank A. and Risley, P. L.
"A Study of the Urogenital Systems of Emys blandingii, with Observations on the Occurance of Mullerian Ducts in Males,"
Proceedings of the Iowa Academy of Science, 47(1), 343-360.
Available at: https://scholarworks.uni.edu/pias/vol47/iss1/93