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Tres Marias raccoon : ウィキペディア英語版 | Tres Marias raccoon
The Tres Marias raccoon (''Procyon lotor insularis'') is a subspecies of the common raccoon endemic on the two main islands of the Islas Marías, an archipelago off the western coast of the Mexican state of Nayarit.〔 (This source was used for the whole article unless noted otherwise.)〕 == Classification ==
In its initial description in 1898, the Tres Marias raccoon was classified as a subspecies of the common raccoon (''Procyon lotor'') by Clinton Hart Merriam.〔 (This source was used for the whole chapter about classification.)〕 In 1950, Edward Alphonso Goldman identified it as a distinct species, a view that has been upheld by most scientists until recently. In a study of a pair of mounted specimens in 2005, Kristofer M. Helgen and Don E. Wilson came to the conclusion that there are morphological differences between the Tres Marias raccoon and the subspecies ''Procyon lotor hernandezii'' of the common raccoon found on the Mexican mainland, but that they are not large enough to justify the classification as distinct species. It is therefore assumed that the Tres Marias raccoon was introduced to the Islas Marías not long ago. Subsequently, the Tres Marias raccoon was listed as a subspecies of the common raccoon in the third edition of Mammal Species of the World by Wilson and DeeAnn M. Reeder published in 2005.
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