Oryzomys peninsulae
Oryzomys peninsulae, also known as the Lower California rice rat, is a species of rodent from western Mexico. It is distinctive in fur color, with a high braincase, robust zygomatic arches, and long incisive foramina. Its fur is grayish-brown on the forequarters, but reddish- brown on the hindquarters.
About Oryzomys peninsulae in brief
Oryzomys peninsulae, also known as the Lower California rice rat, is a species of rodent from western Mexico. It was first described as a separate species, but later lumped into other, widespread species until it was reinstated as separate in 2009. Only about twenty individuals, collected around 1900, are known, and subsequent destruction of its riverine habitat may have driven the species to extinction. It is distinctive in fur color, with a high braincase, robust zygomatic arches, and long incisive foramina. Its fur is grayish-brown on the forequarters, but reddish- brown on the hindquarters.
The underparts are a white, the tail is dark or brown above, and the feet are white below. In some dimensions of its skull, it is larger than O. couesi mexicanus. In total, the total length was 227 to 305mm, averaging 6 to 6mm head and 113 to 152mm body length. In 14 specimens by Carleton and Arroyo-Cabrales, the head and body length was 113 to 128mm, averaging 9mm head and 113 mm body length. The upper incisors are long and broad, cutting edge nearly vertical. Morphometrically, the skull of O. peninsulAE is sharply distinct from other western Mexican Oryzomyini.
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This page is based on the article Oryzomys peninsulae published in Wikipedia (as of Oct. 30, 2020) and was automatically summarized using artificial intelligence.
