According to Catholic.org and UNSW Newsroom a species of extinct Australian frog has been cloned back into existence. This was a gastric brooding frog known as Rheobatrachus silus. It would swallow its eggs and allowing them to gestate inside the stomach, and then gave oral birth to the offspring. Rheobatrachus silus became extinct in 1983. The cloned animals came from samples collected in the 1970s. This is just the first of many species of extinct animals that are in the process of being cloned.