DEFINITION AND DIAGNOSIS OF A NEW TRIBE OF SIGMODONTINE RODENTS (CRICETIDAE: SIGMODONTINAE), AND A REVISED CLASSIFICATION OF THE SUBFAMILY

By G. D’Elía, U. Pardiñas, P. Teta, J. Patton. 2007

88 citations recorded by the source corpus.

A new tribe of sigmodontine rodents is formally defined and diagnosed. The tribe contains the extant genera Abrothrix (including Chroeomys), Chelemys, Geoxus, Pearsonomys, and Notiomys, a group of taxa distributed in the central and southern Andes and lowlands both east and west of the cordillera. The new tribe presents a unique combination of characters including nasals and premaxilla usually projected anterior to the incisors, moderately trumpeted; zygomatic plate with upper free border reduced or obsolete; and third upper molar reduced and sub-cylindrical in out-line with an internal ring-like enamel fossette. Molecular phylogenetic analyses indicate that Abrothrix is sister to a clade containing the remaining genera of the new tribe.

Subfields: Ecological Modeling, Ecology, Paleontology

View Paper: https://www.semanticscholar.org/paper/fd761eb2c1e5b0788dd299201f34798fe6a08435

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In Ecology

1. L. P. Costa
2. M. Weksler
3. A. Percequillo
4. G. Colli
5. R. M. D. Ledo

In Paleontology

1. L. P. Costa
2. M. Weksler
3. A. Percequillo
4. G. Colli
5. R. M. D. Ledo

Citations in the corpus

• A new genus and species of rodent from the Brazilian Atlantic Forest (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with comments on oryzomyine biogeography (2011, background): “A major component (about one fifth) of the mammalian diversity of Atlantic Forest is the subfamily Sigmodontinae (Muroidea : Cricetidae), with about 19 genera and 50 species (Musser & Carleton, 2005; D’Elía et al., 2007).”