Subject
Pocket gophers Books
Best books
Robert J. Russell
Evolution and Classification of the Pocket Gophers of the Subfamily Geomyinae
"Evolution and Classification of the Pocket Gophers of the Subfamily Geomyinae" by Robert J. Russell is a scientific publication written in the late 20th century. The work focuses on the evolutionary history, anatomical features, and classification of pocket gophers belonging to the subfamily Geomyinae. It provides an in-depth analysis of fossil records and modern species, illustrating the taxonomic intricacies and evolutionary trends within this group of rodents. The opening of this publication introduces the background and significance of the research, highlighting the importance of previous studies on pocket gophers, particularly noting C. Hart Merriam's earlier work in 1895. Russell discusses the limitations Merriam faced due to access to fossil specimens, suggesting that a more thorough examination of fossils can greatly influence our understanding of the evolutionary pathway of Geomyinae. Additionally, the introduction alludes to the book's comprehensive approach in examining various anatomical characteristics used for classification, laying the groundwork for the detailed exploration of evolutionary changes and phylogenetic relationships among modern and fossil pocket gophers.
Bernardo Villa Ramírez
Subspeciation in Pocket Gophers of Kansas, [KU. Vol. 1 No. 11]
"Subspeciation in Pocket Gophers of Kansas" by Bernardo Villa-R. and E. Raymond Hall is a scientific publication produced by the University of Kansas, likely written in the mid-20th century, specifically around the late 1940s. This work focuses on the taxonomic status and distribution of various subspecies of pocket gophers belonging to the genus "Geomys" found across Kansas, providing detailed morphological descriptions and geographical analysis. The authors conducted a thorough examination of 335 specimens, identifying several subspecies of pocket gophers in Kansas and highlighting intergradation between them. The study reveals that the previously recognized distinctions among different gopher types were too rigid and points to a more fluid classification based on geographical distribution and morphological variants. By analyzing the structural features, the authors arranged the species under the name "Geomys bursarius", in recognition of the oldest available name, and presented a detailed description of the five recognized subspecies, noting their unique characteristics, geographic ranges, and relationships to one another. The research contributes significantly to our understanding of pocket gopher subspeciation, emphasizing the complexity of species classification in natural populations.
Phillip M. Youngman
Geographic Variation in the Pocket Gopher, Thomomys bottae, in Colorado
"Geographic Variation in the Pocket Gopher, Thomomys bottae, in Colorado" by Phillip M. Youngman is a scientific publication produced in the mid-20th century. This work primarily focuses on the study of the geographic distribution and variation of the pocket gopher species Thomomys bottae within Colorado. The text offers insights into the different subspecies and their specifics based on ecological zones, physical characteristics, and local adaptations. The book examines 249 specimens of Thomomys bottae, identifying six distinct subspecies present in Colorado, each adapted to their unique environmental contexts. Youngman's research details the physical characteristics that distinguish these subspecies—such as coloration, skull shape, and anatomical features—while also emphasizing the importance of geographic factors. The study provides a comprehensive overview of the habitat preferences of the species and subspecies in relation to Colorado's diverse landscapes, including the Colorado Plateau Province and Southern Rocky Mountain Province.
Robert J. Russell
A New Species of Pocket Gopher (Genus Pappogeomys) From Jalisco, México
"A New Species of Pocket Gopher (Genus Pappogeomys) From Jalisco, México" by Robert J. Russell is a scientific publication written in the mid-20th century. This short work focuses on the description and classification of a newly identified species of pocket gopher, specifically from the genus Pappogeomys, found in the Sierra del Tigre region of Jalisco, México. The book contributes to the field of mammalogy by detailing the ecological and anatomical features that distinguish this species from its closest relatives. The content details the findings from specimens collected primarily by Joseph R. Alcorn, with a particular emphasis on the unique characteristics that differentiate the newly recognized species, named Pappogeomys alcorni, from Pappogeomys bulleri. The book provides habitat information, morphological comparisons, and specific anatomical details such as dental and skull characteristics. Russell articulates the significance of these findings in understanding the biodiversity of mammals in this region of México and acknowledges Alcorn's contributions to this field of study.
E. Raymond (Eugene Raymond) Hall
A New Pocket Gopher (Genus Thomomys) From Wyoming and Colorado
"A New Pocket Gopher (Genus Thomomys) From Wyoming and Colorado" by E. Raymond Hall is a scientific publication written in the early 1950s. This book presents a detailed description and classification of a new subspecies of pocket gopher found in the Sierra Madre Mountain Range of Wyoming and Colorado. The focus is on contributing to the field of natural history, specifically the taxonomy of small mammals. In this publication, Hall introduces the new subspecies, named Thomomys talpoides meritus, based on specimens collected from the region. He provides a thorough analysis of the physical characteristics, habitat, and measurements of this gopher compared to other subspecies. The study emphasizes the differences in size, color, and skull structure that distinguish T. t. meritus from its neighboring subspecies, T. t. rostralis and T. t. clusius. Overall, the work contributes valuable knowledge to the field of mammalogy and showcases the importance of detailed field research in understanding biodiversity.
Robert J. Russell
Geographic Variation in the Pocket Gopher, Cratogeomys castanops, in Coahuila, México
"Geographic Variation in the Pocket Gopher, Cratogeomys castanops, in Coahuila, México" by Robert J. Russell and Rollin H. Baker is a scientific publication produced in 1955. This work explores the various subspecies of the plateau pocket gopher, specifically the geographic distribution and variation within the state of Coahuila, Mexico. The authors delve into the ecological factors that influence these subspecies, underlining the complexity of their habitat and the impact of geographic features on their populations. The book systematically describes eleven subspecies of Cratogeomys castanops identified in Coahuila, referencing previous revisions and presenting new findings based on extensive field research and specimen collection. The authors discuss how factors such as topography and soil composition contribute to the isolation and differentiation of these subspecies. They thoroughly analyze physiological traits, including cranial measurements and pelage coloration, while also recognizing the behavioral ecology of these pocket gophers. Overall, the publication provides significant insights into the biodiversity of the region and contributes to a broader understanding of species adaptation and variation in response to environmental pressures.
E. Raymond (Eugene Raymond) Hall
A New Pocket Gopher (Thomomys) and A New Spiny Pocket Mouse (Liomys) from Michoacán, Mexico
"A New Pocket Gopher (Thomomys) and A New Spiny Pocket Mouse (Liomys) from Michoacán, Mexico" by E. Raymond Hall and Bernardo Villa R. is a scientific publication written in the mid-20th century. This work focuses on the taxonomic identification and description of two previously unrecognized subspecies of rodents from the region of Pátzcuaro in Michoacán, Mexico. It presents findings from field studies and provides detailed morphological analyses of the species in question. The publication introduces the subspecies "Thomomys umbrinus pullus" and "Liomys irroratus acutus," detailing their characteristics, habitat, and distinctions from related species. The authors document the ecological context in which these animals were found, noting their coexistence in specific geological areas. Through quantitative measurements and physical descriptions, the work contributes to the understanding of species diversity in rodent populations within this geographic area, showcasing the subtle differences that account for the classification of these new subspecies. The paper is both an essential reference for mammalogists and a contribution to the broader field of wildlife biology in Mexico.
E. Raymond (Eugene Raymond) Hall
A New Pocket Gopher (Genus Thomomys), from Eastern Colorado
"A New Pocket Gopher (Genus Thomomys), from Eastern Colorado" by E. Raymond Hall is a scientific publication written in the early 1950s. This work represents a study focused on the taxonomy of pocket gophers, specifically examining previously misclassified specimens from east-central Colorado and proposing a new subspecies. The text is aimed at scholars and researchers in the field of mammalogy and provides detailed anatomical and geographic information regarding this rodent species. In this publication, Hall identifies and describes a new subspecies of the pocket gopher, named "Thomomys talpoides retrorsus", which was discovered in the region of eastern Colorado. By analyzing specimens and their characteristics, Hall distinguishes this subspecies from others previously categorized and offers a thorough comparison based on various skull measurements, coloration, and other anatomical features. The study not only clarifies the subspecific identity of these gophers but also addresses previous taxonomic confusion, contributing valuable knowledge to the understanding of mammalian diversity in North America.
Robert J. Russell
Four New Pocket Gophers of the Genus Cratogeomys from Jalisco, Mexico
"Four New Pocket Gophers of the Genus Cratogeomys from Jalisco, Mexico" by Robert J. Russell is a scientific publication written in the early 1950s. This specialized work focuses on the taxonomy of pocket gophers found in the state of Jalisco, Mexico, detailing the identification and descriptions of new subspecies within the genus Cratogeomys. The objective is to enhance the understanding of species variation and distribution in this particular region. The book outlines the findings from Russell's study, where he identifies two species of gophers, Cratogeomys gymnurus and Cratogeomys zinseri, and introduces four new subspecies: Cratogeomys gymnurus tellus, Cratogeomys gymnurus atratus, Cratogeomys zinseri zodius, and Cratogeomys zinseri morulus. For each subspecies, the author provides detailed descriptions of physical characteristics, geographical ranges, and diagnostic criteria that differentiate them from existing species. Additionally, Russell discusses the ecological implications of the distribution patterns and the adaptations that have led to such subspeciation among gopher populations within a relatively small geographical area.
E. Raymond (Eugene Raymond) Hall
Two New Pocket Gophers from Wyoming and Colorado
"Two New Pocket Gophers from Wyoming and Colorado" by E. Raymond Hall and H. Gordon Montague is a scientific publication written in the early 1950s. This work details the identification of two previously unnamed subspecies of the northern pocket gopher, specifically focusing on their geographic variations and morphological distinctions. The publication serves as a significant contribution to the field of mammalogy, particularly concerning the study of rodent populations in the western United States. The book presents the findings of Montague’s study of the pocket gophers in Wyoming and Hall's subsequent research examining related specimens from Colorado. It provides detailed descriptions of the two new subspecies, namely "Thomomys talpoides rostralis" and "Thomomys talpoides attenuatus", highlighting their distinct characteristics, such as size, color, and skull morphology. The authors also compare these new subspecies to adjacent ones, discussing geographic distribution and variation, which enhances the understanding of the ecological and evolutionary dynamics of pocket gophers in this region.
Recently surfaced classics