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   Dinomyidae (Giant Rats) 

Broader Terms:
   Dinomyidae (Giant Rats) 
   Hystricognathi (hystricognath rodents) 
   Rodentia (rodents) 

More Specific:
Latest Articles on Dinomyidae from uBioRSS
Bolivian vice president proposes unprecedented agricultural expansion - CBD News Headlines
Basicranial Morphology and Relationships of Antillean Heptaxodontidae (Rode... - BioOne: Bulletin of the American Museum of Natural...

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Common Names: Giant Rats

1.  Comprehensive total evidence phylogeny of chinchillids (Rodentia, Caviomorpha): Cheek teeth anatomy and evolution.LinkIT
Rasia LL, Candela AM, Cañón C
Journal of anatomyJ AnatComprehensive total evidence phylogeny of chinchillids (Rodentia, Caviomorpha): Cheek teeth anatomy and evolution.405-42310.1111/joa.13430Rodents are the most diverse order of extant mammals, and caviomorph rodents, or New World hystricognaths, have a remarkable morphological disparity and a long fossil record that begins in the Eocene. Chinchilloidea is a poorly understood clade within Caviomorpha, from an evolutionary and phylogenetic perspective. It includes the extant families Chinchillidae and Dinomyidae, the extinct Neoepiblemidae and Cephalomyidae, and several extinct chinchilloids without a clear phylogenetic position, like Eoincamys, Borikenomys, Chambiramys, Ucayalimys, Incamys, Saremmys, Garridomys and Scotamys. The family Chinchillidae includes the extant Chinchilla and Lagidium, grouped in Chinchillinae, and the only living Lagostominae, Lagostomus maximus. Among extinct chinchillids, Eoviscaccia (early Oligocene-early Miocene of Argentina, Bolivia and Chile), Prolagostomus (early-middle Miocene of Argentina, Bolivia and Chile) and Pliolagostomus (early-middle Miocene of Argentina) are the only genera originally described as members of the family. Based on the study of specimens with unworn or little-worn cheek teeth, belonging to extinct and extant taxa, we propose homologies of the cheek teeth structures and perform a combined molecular and morphological phylogenetic analysis including extinct and extant taxa of all families of Chinchilloidea and all genera of Chinchillidae. Our phylogenetic analysis recovered three major lineages in the evolutionary history of Chinchilloidea. The first major lineage is composed of the extant taxa Chinchilla, Lagidium and Lagostomus, and the extinct genera Eoviscaccia, Prolagostomus, Pliolagostomus, Garridomys, Incamys, Loncolicu and Saremmys. Cephalomyid (Banderomys, Cephalomys, Litodontomys, Soriamys) and neoepiblemid (Neoepiblema, Perimys, Phoberomys, Scotamys) genera are part of the second major lineage, while dinomyids such as Dinomys, Drytomomys, Scleromys, 'Scleromys' and Tetrastylus constitute the third major lineage within Chinchilloidea. The phylogenetic position of some taxa previously considered as incertae sedis chinchilloids or without a clear suprageneric group (i.e. Incamys, Saremmys, Garridomys and Loncolicu) show that they belong to pan-Chinchillidae and conform the stem Chinchillidae along with Eoviscaccia. The euhypsodont crown Chinchillidae includes the living subfamilies Chinchillinae and Lagostominae. Dinomyidae and Eoincamys pascuali are recovered as the sisters of a major clade composed by 'Cephalomyidae'+Neopiblemidae and pan-Chinchillidae, and Chambiramys sylvaticus occupies a basal position to the same clade. Four major radiation events are identified in the evolutionary history of Chinchilloidea. The analysis of new morphological characters linked with molecular evidence as well as the addition of taxa of uncertain or unstable phylogenetic position or not considered in previous studies allowed us resolve part of the relationships within Chinchilloidea, particularly that of Chinchillidae, supporting preceding morphological hypotheses.© 2021 Anatomical Society.RasiaLuciano LLL0000-0002-0300-4918División Paleontología Vertebrados, Museo de La Plata, La Plata, Buenos Aires, Argentina.CONICET, Argentina.CandelaAdriana MAMDivisión Paleontología Vertebrados, Museo de La Plata, La Plata, Buenos Aires, Argentina.CONICET, Argentina.CañónCarolaCInstituto de Diversidad y Evolución Austral (IDEAus-CONICET, Puerto Madryn, Argentina.Parque Real 6, Santiago, Chile.engJournal Article20210315EnglandJ Anat01371620021-8782IMAnimalsBiological EvolutionChinchillaanatomy & histologygeneticsPhylogenyToothanatomy & histologyCenozoicChinchilloideaSouth Americadental homologiesontogeny2021030120201002202103032023080120213166020218196020213151740ppublish3372132910.1111/joa.13430PMC8273581REFERENCES, 2021</i></font><br><font color=#008000><br></font></span><br>2.  <a href= class=title>Upper molar morphology, homologies and evolutionary patterns of chinchilloid rodents (Mammalia, Caviomorpha).</a><a href=><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Rasia LL, Candela AM<br><font color=gray><i>Journal of anatomy, 2019</i></font><br><font color=#008000><br></font></span><br>3.  <a href= class=title>Diversification and biogeography of the Neotropical caviomorph lineage Octodontoidea (Rodentia: Hystricognathi).</a><a href=><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Upham NS, Patterson BD<br><font color=gray><i>Molecular phylogenetics and evolution, 2012</i></font><br><font color=#008000><br></font></span><br>4.  <a href= class=title>The largest fossil rodent.</a><a href=><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Rinderknecht A, Blanco RE<br><font color=gray><i>Proceedings. Biological sciences, 2008</i></font><br><font color=#008000><br></font></span><br>5.  <a href= class=title>From the Old World to the New World: a molecular chronicle of the phylogeny and biogeography of hystricognath rodents.</a><a href=><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Huchon D, Douzery EJ<br><font color=gray><i>Molecular phylogenetics and evolution, 2001</i></font><br><font color=#008000><br></font></span><br></table></tr></table></td><script src="" type="text/javascript"> </script> <script type="text/javascript"> _uacct = "UA-634822-1"; urchinTracker(); </script> </BODY> </HTML>