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Arizona is also the best known source of Chindesaurus fossils. Chindesaurus is notable for providing an evolutionary link between the local fauna and the most primitive known dinosaurs such as Eoraptor and Herrerasaurus, which are found in South America. [6] Prosauropods are present but rare in Arizona's Late Triassic deposits. [7]
This list of the prehistoric life of Arizona contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Arizona.
Charles Robert Darwin (/ ˈ d ɑːr w ɪ n / [5] DAR-win; 12 February 1809 – 19 April 1882) was an English naturalist, geologist, and biologist, [6] widely known for his contributions to evolutionary biology.
Inside, display cases filled with coprolites — fossilized feces from animals that lived millions of years ago — line the walls. They range from minuscule termite droppings to a massive ...
The Kaibab squirrel is an example of evolution occurring through geographic isolation, but not because of the canyon. [2] Compared to the Kaibab squirrel, the Abert's squirrel, with its several subspecies, has a much broader distribution and is found on the South Rim of the Grand Canyon. The difference between North Rim and South Rim Abert's ...
Scientists have found a new species of tarantula, a red-reared arachnid, in Arizona, and the discovery was "rather unexpected." “We often hear about new species being discovered from remote ...
They are among the wonders of our deserts: star dunes, the vaguely pyramid-shaped sand formations up to about 1,000 feet (300 meters) tall with arms stretching out from a central peak to give them ...
Baiomys Bassariscus † Bensonomys † Bensonomys arizonae † Bensonomys elachys – or unidentified comparable form † Bensonomys gidleyi † Bensonomys yazhi Bison † Boreohippidion † Boreohippidion galushai Restoration of two of the Miocene-Pliocene bone-crushing dog genus Borophagus preying on a camel. Jay Matternes (1964). † Borophagus † Borophagus diversidens † Borophagus ...