Neoreomys
genus of fossil rodents
Neoreomys is an extinct genus of caviomorph rodent that lived in South America during the Miocene epoch.
Taxonomy
Phylogenetic analysis has shown Neoreomys to be a monophyletic genus not closely related to Dasyproctidae, but instead representing a plesiomorphic member of Cavioidea.
Description
The incisors of Neoreomys australis were characterised by an enamel microstructure consisting of an interprismatic matrix whose crystallites ran parallel or at a very low angle to enamel prisms and without totally surrounding each prism.
Palaeobiology
Locomotion
Geometric morphometric analysis of the foot of Neoreomys points to it having had a generalised mode of ambulation, in contrast to other Late Oligocene and Early Miocene caviomorphs.
Diet
Dental microwear analysis has found that Neoreomys australis was a consumer of fruits and seeds.
Begin with the source’s own compact description: “Neoreomys” is genus of fossil rodents. The dossier treats that line as a proposition to test through Neoreomys, genus and fossil, not as a finished interpretation.
Why this record matters
The phrase “genus of fossil rodents” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Sep 14, 2026. The linked authority identifier is Q137460345. None of the 0 selected statements returned an explicit reference.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
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This entry incorporates text from “Neoreomys” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.