Chinchilloidea

Trurl66 · Public Domain · via Wikidata/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- HystricognathiPBDB
- Diet
- herbivorePBDB, for Rodentia
- Life habit
- ground dwellingPBDB, for Rodentia
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 27 million years on record.
The record covers at least 27.3 Mya to 11.7 ka. No occurrence read is dated outside 33.9 Mya to 0 Mya.
615 occurrences of Chinchilloidea on record, most of them in the Miocene. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
615 occurrences- Oligocene4%
- Miocene79%
- Pliocene9%
- Pleistocene6%
- Holocene2%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
79 formations
- Ituzaingo Formation66
- Santa Cruz Formation60
- Solimoes Formation40
- Cerro Azul Formation38
- Villavieja Formation · Honda Group34
- Urumaco Formation30
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The named rock units Chinchilloidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 55 further formations hold fewer occurrences each and are not listed. 77 occurrences have no formation on record, which is common for older literature.
Chinchilloidea and its relatives
MioceneWhere Chinchilloidea and its relatives were recorded in the Miocene.
Found in the same rock
1,843 taxa- Lagostomus24 sites
- Neoreomys australis23 sites
- Octodontoidea21 sites
- Prolagostomus21 sites
- Protypotherium19 sites
- Perimys18 sites
- Paedotherium minor17 sites
- Lagostomus maximus16 sites
- Acarechimys minutissimus15 sites
- Prozaedyus15 sites
- Adinotherium14 sites
- Caviomorpha14 sites
- Chasicotatus ameghinoi14 sites
- Propalaehoplophoridae14 sites
- Stenotatus14 sites
- Tremacyllus impressus14 sites
- Acarechimys13 sites
- Acdestis oweni13 sites
- Anura13 sites
- Glyptodontidae13 sites
- Hapalops13 sites
- Lagostomus (Lagostomopsis)13 sites
- Palaeothentes minutus13 sites
- Perimys erutus13 sites
The Paleobiology Database records 231 sites for Chinchilloidea, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
182 references- Los roedores del “Mesopotamiense” (Mioceno tardío, Formación Ituzaingó) de la provincia de Entre Ríos (Ar- gentina)39
- Hystricomorph rodents from the late Miocene of Colombia, South America31
- Revision of the Miocene caviomorph rodents from the Río Santa Cruz (Argentinean Patagonia)30
- New light on the late Middle Miocene–Early Pliocene representatives of Lagostomus (Chinchillidae, Rodentia) from Cerro Azul Formation, Argentina23
- Imigrantes em um continente perdido: O registro fossilífero de roedores Caviomorpha (Mammalia: Rodentia: Ctenohystrica) do Cenozoico do Brasil22
- Roedores chinchilloideos (Hystricognathi) de la Formación Pinturas, Mioceno temprano-medio de la provincia de Santa Cruz, Argentina17
- Miocene vertebrates from Entre Rios province, eastern Argentina17
- Bioestratigrafia de la fauna de mamíferos de las Formaciones Socorro, Urumaco y Codore (Mioceno medio - Plioceno temprno)de la región de Urumaco, Falcon, Venezuela14
- Los roedores de la Edad Friasense (Mioceno medio) de Patagonia14
- A 60-million-year Cenozoic history of western Amazonian ecosystems in Contamana, eastern Peru12
- Cronobioestratigrafía del Mioceno tardío – Plioceno temprano, Puerta de Corral Quemado y Villavil, provincia de Catamarca, Argentina12
- Neoreomys and Scleromys (Rodentia, Hystricognathi) from the Pinturas Formation, late Early Miocene of Patagonia, Argentina12
Each of the 615 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. 170 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1

Picture of Chinchilloidea
- Source
- Wikidata/Commons
- Credit
- Trurl66
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itHystricognathi through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Bennett 1833