The answer for this weeks #GuessThat #Lego #FossilFriday is #Ichthyosaurus

Originally found by the legendary #Mary #Anning in 1814 #England, Ichthyosaurus is one of the earliest almost complete fossils on record. It's name means fish lizard. This is because it is a great example of convergent evolution. It filled a similar niche as the modern dolphin. Even at 200m years apart, they look very similar.
The largest relative, Shastasaurus, could potentially as big or be bigger than a blue whale.