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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 .
Protosuchus (from Greek: protos, "first" and Greek: souchos, "crocodile") [1] is an extinct genus of carnivorous crocodyliform from the Early Jurassic.It is among the earliest animals that resemble crocodilians.
This family should not be confused with Protosuchia, which is an informal evolutionary grade of primitive crocodiliforms Distribution ...
Nominosuchus is a genus of protosuchian-grade crocodyliform.It is known from several specimens discovered in ancient lake deposits of the Tithonian-age Upper Jurassic Tsagaantsav Formation, southwestern Mongolia.
Proterosuchus fergusi from the Early Triassic of South Africa. They were slender, medium-sized (about 1.5 m (4 ft 11 in) long, largest specimens reached 3.5–4 m (11–13 ft) [2]), long-snouted and superficially crocodile-like animals, although they lacked the armoured scutes of true crocodiles, and their skeletal features are much more primitive.
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The "Mesosuchia" were formerly placed at Suborder rank as within Crocodylia. The "first" crocodiles were placed within their own suborder, Protosuchia; whilst extant species where placed within Suborder Eusuchia (meaning 'true crocodiles'). Mesosuchia were the crocodylians "in between".But it is no longer regarded as genuine because it belongs ...
Notosuchia is a suborder of primarily Gondwanan mesoeucrocodylian crocodylomorphs that lived during the Jurassic and Cretaceous.Some phylogenies recover Sebecosuchia as a clade within Notosuchia, others as a sister group (see below); if Sebecosuchia is included within Notosuchia its existence is pushed into the Middle Miocene, about 11 million years ago.