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Extinct crocodylomorphs were considerably more ecologically diverse than modern crocodillians. The earliest and most primitive crocodylomorphs are represented by " sphenosuchians ", a paraphyletic assemblage containing small-bodied, slender forms with elongated limbs that walked upright, which represents the ancestral morphology of Crocodylomorpha.
This list of the prehistoric life of Texas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Texas. Precambrian [ edit ]
Crocodiles (family Crocodylidae) or true crocodiles are large, semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia.The term “crocodile” is sometimes used more loosely to include all extant members of the order Crocodilia, which includes the alligators and caimans (both members of the family Alligatoridae), the gharial and false gharial (both ...
Nearby adults, presumably the parents, may warn young of predators or alert them to the presence of food. The range and quantity of vocalisations vary between species. Alligators and caimans are the noisiest while some crocodile species are almost completely silent. In some crocodile species, individuals "roar" at others when they get too close.
In 1938, a major dinosaur footprint find occurred near Glen Rose. Pleurocoelus was the Texas state dinosaur from 1997 to 2009, when it was replaced by Sauroposeidon (Paluxysaurus jonesi) after the Texan fossils once referred to the former species were reclassified to a new genus.
The bigger, but less common, Deinosuchus that lived in Texas and Montana might have been more specialized hunters, capturing and eating large dinosaurs. [17] Schwimmer noted no theropod dinosaurs in Deinosuchus 's eastern range approached its size, indicating the massive crocodilian could have been the region's apex predator .
There were duck-billed dinosaurs, horned dinosaurs, armored dinosaurs, meat-eating dinosaurs, and various crocs, turtles, small mammals, birds, amphibians and fish.
This list of the Paleozoic life of Texas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Texas and are between 538.8 and 252.17 million years of age.