2022 Australian Dinosaurs $1 AlBr Mintmark and Privy Mark Uncirculated 4 Coin Set RAM

Platypterygius australis, an icthyosaur (marine reptile), lived 105 to 100 million years ago and swam the Eromanga Sea, a large inland seaway that covered much of Eastern Australia during the Cretaceous period.

Platypterygius weighed 3500kg and possessed an elongated jaw with over 200 teeth that it swept through the water to catch its prey of fish and squid.

Size: ~3500kg
Diet: Fish and squid.
Discovery: In 1990 Mary Waded studied a wide range of icthyosaur material from Australia and concluded that the fossils represented a new species.
Age: 105.3 to 99.7 million years ago. Cretaceous period.