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Tetanuran)
The Tetanurae are an extremely diverse group of Theropod dinosaurs, united by a few common features such as enlarged hands which have lost the fourth and fith digits to leave three fingers. Interestingly the most famous dinosaur in this grouping, Tyrannosaurus, lacks both these features!
The grouping can be sub-divided into Spinosauroidea and Avetheropoda , the latter consisting of the Carnosauria (allosaurs and their close relatives; allosaurids flourished from the late Jurassic to the late Cretaceous period, in places as far apart as North and South America, Europe and Africa) and the Coelurosauria.
There are a large number of well known dinosaurs in this group including:
