Revision of the Pocket Gophers, Family Geomyidæ, Exclusive of the Species of Thomomys

Evolutionary Relationships of Pocket Gophers of the Genus Pappogeomys (Rodentia: Geomyidae)

“…Specimens of P. bulleri show the suite of adaptations characteristic of fossorial mammals, including a stocky build, fusiform shape, powerful jaws and incisors, large and powerful forelimbs, and reduced hind limbs and hips. Since its original description in 1892, P. bulleri has been the subject of several taxonomic revisions in which authors have recognized 1 species with 2 subspecies (Merriam 1895), 1 species with 8 subspecies (Goldman 1939), 2 species with 8 subspecies (Russell 1968b), or 1 species with 5 subspecies (this study).…”

“…Russell's (1968a) examination of both fossil and extant geomyids led him to place Cratogeomys as a subgenus of Pappogeomys, and this taxonomy was followed by most authorities (e.g., Hall 1981;Patton 1993) until recently (Patton 2005). Because studies of molecular characters (e.g., Demastes et al 2002;DeWalt et al 1993;Honeycutt and Williams 1982) have documented considerable genetic divergence between Cratogeomys and Pappogeomys, most modern authorities have returned to the original taxonomy of Merriam (1895) in which Cratogeomys and Pappogeomys are recognized as valid genera (Hafner et al 2008;Patton 2005).…”

“…Pappogeomys is sister to Cratogeomys within the Geomyidae (Merriam 1895), and the phylogenetic position of these taxa relative to other geomyids was investigated 1st by Russell (1968a) based on morphological characters, then by Honeycutt and Williams (1982), DeWalt et al (1993), and Demastes et al (2002) based on molecular characters. Russell's (1968a) examination of both fossil and extant geomyids led him to place Cratogeomys as a subgenus of Pappogeomys, and this taxonomy was followed by most authorities (e.g., Hall 1981;Patton 1993) until recently (Patton 2005).…”

Los roedores de Jalisco, México: clave de determinación

“…Para facilitar y en su caso asegurar la determinación correcta de los integrantes de este grupo, se tomaron en cuenta los caracteres diagnósticos que permiten reconocer fácilmente a las especies, enfatizando aquéllos estados del carácter que reflejan las poblaciones de las especies que habitan la entidad. Por tanto, los atributos de los roedores considerados en el presente trabajo se derivaron a partir de los datos de las revisiones taxonómicas de las familias Geomyidae (Merriam 1895), Sciuridae (Nelson 1899;Howell 1938), de los trabajos de algunos miembros de los géneros Perognathus (Osgood 1900), Oryzomys (Merriam 1901a;Goldman 1918;Carleton y Arroyo-Cabrales 2009), Peromyscus (Osgood 1909), Neotoma (Goldman 1910;Hall y Genoways 1970), Reithrodontomys (Howell 1914;Hooper 1952), Orthogeomys (Nelson y Goldman 1930), Thomomys (Nelson y Goldman 1934), Nelsonia (Hooper 1954), Baiomys (Packard 1960), Pappogeomys (Russell 1968), Spermophilus (Helgen et al 2009), de la especie Sciurus aureogaster (Musser 1968), notas sobre faunas locales (Allen 1906;Hooper 1955;Musser 1969;Genoways y Jones 1969, 1973, estudios faunísticos regionales (Carleton 1977), monografías (Hall 1981; Villa-Ramírez y Cervantes 2003), y de guías de campo (Ceballos y Miranda 1986.…”

“…Estudios posteriores adicionan 35 taxones a la riqueza de roedores de Jalisco, 26 de ellos descritos por vez primera para la entidad (Merriam 1892(Merriam , 1895(Merriam , 1897(Merriam , 1901a(Merriam , 1901b(Merriam , 1902Thomas 1892Thomas , 1893aThomas , 1893bThomas , 1893cAllen 1897;Nelson 1899;Osgood 1900Osgood , 1904Bailey 1902;Elliot 1903;Goldman 1905). Hacia 1906, Allen realiza el primer estudio centrado en el estado de Jalisco en el que reporta un total de 23 taxa.…”