The Subspecies of the Mexican Red-Bellied Squirrel, Sciurus aureogaster
"The Subspecies of the Mexican Red-Bellied Squirrel, Sciurus aureogaster" by Keith R. Kelson is a scientific publication written in the early 1950s. This document provides a taxonomic analysis of the various subspecies of the Mexican red-bellied squirrel, focusing on morphological characteristics and geographic distribution. Primarily aimed at a scholarly audience, it contributes to the field of mammalogy and aims to clarify the classification and understanding of these squirrel subspecies. In this publication, Kelson discusses previous classifications made by notable figures in the study of squirrels and presents his own findings based on the examination of 256 specimens across the red-bellied squirrel's geographic range. He investigates variations in coloration and skull morphology among the three subspecies, challenging earlier conclusions and arguing that two of the subspecies, "Sciurus aureogaster hypopyrrhus" and "Sciurus aureogaster frumentor", may not warrant separate taxonomic status due to overlapping physical traits and limited geographic variation. Ultimately, Kelson proposes that the classification should be simplified, suggesting that many previously identified subgroups are better understood as synonyms within the broader species designation of "Sciurus aureogaster".