2022 $1 Australian Dinosaurs - Dinosaurs Down Under 4 Coin Al/Br Mintmark & Privymark Set CSBMPlatypterygius australis, an ichthyosaur (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.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.This species swan in a large inland seaway called the Eromanga Sea that covered much of Eastern Australia during the Cretaceous period.Size was approximately 3500kg, feeding on Fish & Squid, it was discovered in 1990 by Mary Waded studied a wide range of ichthyosaur material from Australia and concluded that the fossils represented a new species. It was dated between 105.3 to 99.7 million years ago. The Cretaceous period.The coin's reverse commemorates the Platypterygius australis, an Australian dinosaur.The packaging features illustrations of the Platypterygius.Each set contains C Mintmark, S, M, B Privy Mark Coins.The coins' obverse features the effigy of Her Majesty Queen Elizabeth II designed by Jody Clark.Each coin is issued as Australian legal tender.Denomination : 4 x $1Quality : UncirculatedMetal : Aluminium BronzeWeight : 9.00 gmsDiameter : 25 mmMintage : UnlimitedAuthenticity : Royal Australian Mint
