Gonads. Gonads are the male and female primary reproductive organs. The male gonads are the testes and the female gonads are the ovaries. These reproductive system organs are necessary for sexual reproduction as they are responsible for the production of male and female gametes. Male Gonad Hormones. 2  Androgens are hormones that primarily influence the development of the male reproductive system. 3  Although found in much higher levels in men, androgens are also produced in women. 4  Testosterone is the main androgen secreted by the testes.
While Petrified Forest represents the dawn of the dinosaurs, Dinosaur National Monument represents the time when these massive reptiles ruled the Earth. The Morrison Formation in Dinosaur contains a Late Jurassic ecosystem, and visitors can see more than 1,500 dinosaur bones and fossils exposed on the cliff face inside the Quarry Exhibit Hall. Allosaurus, Apatosaurus, Camarasaurus, Diplodicus, and Stegosaurus were among the 11 species of dinosaurs that shared this ecosystem with frogs, salamanders and lizards, among others.
The museum was founded in 1944 by adapting the style of 11th century old Confucius Temple. There are 3,000 steles exhibited in the museum and as a result of the large number of steles exhibited in the museum it was also called as Stele Forest.