Protosuchia is a group of extinct Mesozoic crocodyliforms. They were small in size (~1 meter in length) and terrestrial. In phylogenetic terms, Protosuchia is considered an informal group because it is a grade of basal crocodyliforms, not a true clade. ==Classification== Recent phylogenetic analyses have not supported Protosuchia as a natural grou...
Found on
http://en.wikipedia.org/wiki/Protosuchia
(from the article `crocodile`) These features occur even in the most primitive representatives of the crocodile group, namely the Protosuchia of the Upper Triassic Period (about ...
Found on
http://www.britannica.com/eb/a-z/p/124
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