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The Amazon rainforest is a species-rich biome in which thousands of species live, including animals found nowhere else in the world. To date, there is at least 40,000 different kinds of plants, 427 kinds of mammals, 1,300 kinds of birds, 378 kinds of reptiles, more than 400 kinds of amphibians, and around 3,000 freshwater fish are living in Amazon.
Reptiles, from Nouveau Larousse Illustré, 1897–1904, notice the inclusion of amphibians (below the crocodiles). In the 13th century, the category of reptile was recognized in Europe as consisting of a miscellany of egg-laying creatures, including "snakes, various fantastic monsters, lizards, assorted amphibians, and worms", as recorded by Beauvais in his Mirror of Nature. [7]
Sauria lies within the larger total group Sauropsida, which also contains various stem-reptiles which are more closely related to reptiles than to mammals. [3] Prior to its modern usage, "Sauria" was used as a name for the suborder occupied by lizards , which before 1800 were considered crocodilians.
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This cladistic approach defines "tetrapods" as the nearest common ancestor of all living amphibians (the lissamphibians) and all living amniotes (reptiles, birds, and mammals), along with all of the descendants of that ancestor. In effect, "tetrapod" is a name reserved solely for animals which lie among living tetrapods, so-called crown tetrapods.
Herbivory is of extreme ecological importance and prevalence among insects.Perhaps one third (or 500,000) of all described species are herbivores. [4] Herbivorous insects are by far the most important animal pollinators, and constitute significant prey items for predatory animals, as well as acting as major parasites and predators of plants; parasitic species often induce the formation of galls.
A microbiologist is proposing the idea that the reign of dinosaurs forced mammals to speed up their reproductive cycle, eliminating key longevity genes. Historic Dinosaur Dominance May Cause ...
One of the most significant adaptations noted by supporters of the arboreal theory is the shift from olfactory to visual dominance. Living in trees, where depth perception is crucial for navigating between branches, primates developed enhanced visual acuity and binocular vision.