Cuniculus paca
The lowland paca, also known as the spotted paca, is a species of rodent. It has coarse dark brown to black fur, a pale underbelly, and typically 3–5 rows of white spots along its sides. Adults weigh 6 to 12 kilograms. Its zygomatic arch is expanded laterally and dorsally to form a resonating chamber, a feature unique among mammals.

Garst, Warren, 1922-2016, photographer · CC BY-SA 4.0 · via Wikipedia/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- Also called
- lowland pacaPBDB
- Sits inside
- CuniculusPBDB
- 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 117 thousand years on record.
The record covers at least 129 ka to 11.7 ka. No occurrence read is dated outside 2.58 Mya to 0 Mya.
16 occurrences of Cuniculus paca on record, most of them in the Pleistocene. 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
16 occurrences- Pleistocene55%
- Holocene45%
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.
Cuniculus paca and its relatives
PleistoceneWhere Cuniculus paca and its relatives were recorded in the Pleistocene.
Found in the same rock
231 taxa- Oryzomys8 sites
- Pecari tajacu8 sites
- Tayassu pecari8 sites
- Dasypus (Dasypus) novemcinctus7 sites
- Dasyprocta6 sites
- Proechimys6 sites
- Hydrochoerus hydrochaeris5 sites
- Nasua nasua5 sites
- Puma yagouaroundi5 sites
- Thrichomys5 sites
- Coendou prehensilis4 sites
- Dasypodinae4 sites
- Dasypus4 sites
- Didelphis marsupialis4 sites
- Eira barbara4 sites
- Leopardus pardalis4 sites
- Mazama4 sites
- Mazama americana4 sites
- Monodelphis domestica4 sites
- Puma concolor4 sites
- Sciurus4 sites
- Tapirus terrestris4 sites
- Alouatta seniculus3 sites
- Cervus gouazoubira3 sites
The Paleobiology Database records 15 sites for Cuniculus paca, 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
11 references- Imigrantes em um continente perdido: O registro fossilífero de roedores Caviomorpha (Mammalia: Rodentia: Ctenohystrica) do Cenozoico do Brasil4
- Fauna de mamíferos do Quaternário de Serra da Mesa (Goiás, Brasil)2
- La Faune Pleistocene du Piaui (Nordeste du Bresil): Implications Paleoecologiques et Biochronologiques2
- Cervidae and Tayassuidae from the Holocene deposits of the Cuvieri Cave, State of Minas Gerais, eastern Brazil; taxonomic and paleoenvironmental considerations1
- Late Quaternary caviomorph rodents (Rodentia: Hystricognathi) from the Serra da Capivara, northeastern Brazil, with description of a new taxon1
- Barro Colorado Island and Tropical Biology1
- Central Amazonian Forests and the Minimum Crtical Size of Ecosystems Project1
- An Overview of Research at Cocha Cashu Biological Station1
- Lumley et al., 19871
- Piacaguera: Um Sambaqui do Litoral do Estado de Sao Paulo, Brasil1
- Density, Productivity, and Distribution of Mammals in Two Venezuelan Habitats1
Each of the 16 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. 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 content3
Picture of Cuniculus paca
- Source
- Wikipedia/Commons
- Credit
- Garst, Warren, 1922-2016, photographer
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
Photogrammetry
- Source
- MorphoSource
- Credit
- Kwata Association
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Cuniculus paca · KWATA:JAGUARS:M1799
3D model
- Source
- Sketchfab
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itCuniculus through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Linnaeus 1766)