| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Small mesodont rodent with three oblique sigmoidal crests on molars, describing an S. Cuspate when unworn. Metalophule/metalophulid developements variable; three or four crests on p4. Variation in loph or cusp development common, specially along anteroposterior midline. Lophs on labial side of upper and lingual side of lowers barely separated, merge into continuos wall with wear. Enamel relatively thik. Reentrants remain wide with wear. M3 small.
Etymology: In reference to its small size and general resemblance to the Santacrucian genus Scleromys Ameghino 1887
It was assigned to Dasyproctidae by Walton (1990); and to Chinchilloidea by Boivin et al. (2021).
| Year | Name and author |
|---|---|
| 1990 | Microscleromys Walton |
| 2021 | Microscleromys Boivin et al. pp. 40-62 fig. 9,10 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
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| Source: s = species, o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Lillegraven 1979, Carroll 1988, Ji et al. 2002, Walton 1997, Nowak 1999 | |||||
Age range: base of the Laventan to the top of the Serravallian or 13.80000 to 11.62000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Serravallian | Peru (San Martin) | M. sp., M. paradoxalis, M. cribriphilus (230802) | |
| Laventan | Colombia (Huila) | M. jacobsi (194496) M. paradoxalis (142428) M. paradoxalis, M. cribriphilus (141257 186683) | |
| Laventan - Mayoan | Colombia | M. sp. (13741) |