The Giving of December. Rhoetosaurus

 Rhoetosaurus was the first sauropod dinosaur discovered in Australia, and for a long time it was one of only two sauropods, the other being Austrosaurus, known to have come from there. In 2009 two other sauropods called Diamantinasaurus and Wintonotitan were named, although all four are only represented by partial remains.
       Although it is widely thought that Rhoetosaurus comes from the Bajocian period, there is some uncertainty to this.