Protosuchians were a grade of basal Crocodyliformes that first appear in the fossil record during the Late Triassic and survived until the Campanian stage of the Late Cretaceous. Most were small, slender carnivores with elongated erect limbs, with the majority measuring roughly 3 feet long or less. These animals tended to inhabit niches similar to those of the smaller carnivorans alive today such as Mustelids, Mongooses and Felids. Some genera were especially cat-like, including the Late Jurassic Fruitachampsa of the Morrison Formation, which possessed large eyes, a short snout and superficially canine-like teeth. The last members of this group dwelt in the Gobi desert region of Mongolia during the Late Cretaceous roughly 75 mya and probably survived until the very end of the period. Despite competition from carnivorous mammals, these Pseudosuchians continued to occupy somewhat marginal small predator niches throughout the Mesozoic.
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9 окт 2021
