In that study, large predators such as crocodiles, plesiosaurs and ichthyosaurs, looking for prey in the ocean after a mass extinction. Biggest predators are in the top of the food chain
and is essential for stability and ecosystem. Dinosaur predators
have preyed on the weak and sick animals, a pressure which makes the prey species to practice and defend itself.
Scheyer and colleagues will determine whether predators in the top of the food chain
completely extinct after the mass extinction of ocean ecosystems and how it functions after a disaster. Marine vertebrates recovered after the mass extinction, it is relatively short in which their body size is not reduced.
The end of the Permian period led to an entirely new composition for top predators, including large fish that live predominantly in the Permian, but these animals have to share the role with Amphibian predators like crocodiles.
About 2 million years later, a mass extinction event occurred again, the period is considered as the end Smithian crisis triggered a change in the group of top predators
. At this point, the first reptile to be at the top of the food chain is Askeptosaurus. The role of predators in the ecosystem stays the same, the difference in the actor continues to change as the turn of time.
Early Triassic Marine Biotic Recovery: The Predators’ Perspective. PLoS ONE, 2014 DOI:10.1371/journal.pone.0088987. Saurichthys, image courtesy of University of Zurich.
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