Myocastor

Uncredited · 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
- EchimyidaePBDB
- Diet
- herbivorePBDB, for Echimyidae
- Life habit
- amphibiousPBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 4.9 million years on record.
The record covers at least 5 Mya to 11.7 ka. No occurrence read is dated outside 8 Mya to 0 Mya.
35 occurrences of Myocastor 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
35 occurrences- Miocene10%
- Pliocene7%
- Pleistocene65%
- Holocene18%
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
12 formations
- Ituzaingo Formation4
- Nuapua Formation2
- Sopas Formation1
- Lujan Formation1
- Dolores Formation1
- Tarija Formation1
Loading coastlines…
The named rock units Myocastor has been recovered from, largest first. Drawn where the rock is now, not where it formed. 19 occurrences have no formation on record, which is common for older literature.
Myocastor and its relatives
PleistoceneWhere Myocastor and its relatives were recorded in the Pleistocene.
Found in the same rock
474 taxa- Ctenomys8 sites
- Hydrochoerus hydrochaeris7 sites
- Glyptodon6 sites
- Notiomastodon platensis6 sites
- Glyptodon clavipes5 sites
- Gomphotheriidae5 sites
- Hippidion principale5 sites
- Lagostomus maximus5 sites
- Lama guanicoe5 sites
- Morenelaphus5 sites
- Ozotoceros bezoarticus5 sites
- Panochthus5 sites
- Zaedyus pichiy5 sites
- Chaetophractus villosus4 sites
- Doedicurus4 sites
- Glossotherium robustum4 sites
- Hippidion4 sites
- Lestodon armatus4 sites
- Macrauchenia patagonica4 sites
- Megatherium americanum4 sites
- Neochoerus4 sites
- Propraopus4 sites
- Puma concolor4 sites
- Smilodon populator4 sites
The Paleobiology Database records 26 sites for Myocastor, 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
27 references- Imigrantes em um continente perdido: O registro fossilífero de roedores Caviomorpha (Mammalia: Rodentia: Ctenohystrica) do Cenozoico do Brasil5
- Los roedores del “Mesopotamiense” (Mioceno tardío, Formación Ituzaingó) de la provincia de Entre Ríos (Ar- gentina)3
- Late Cenozoic mammal bio-chronostratigraphy in southwestern Buenos Aires Province, Argentina2
- Pre-Hispanic mammal exploitation and hunting strategies in the eastern Pampa subregion of Argentina2
- Mammalian fossils from Gruta do Ioiô cave and past of the Chapada Diamantina, northeastern Brazil, using taphonomy, radiocarbon dating and paleoecology1
- Taguatagua 1: New insights into the late Pleistocene fauna, paleoenvironment, and human subsistence in a unique lacustrine context in central Chile1
- Occurrence of Dicolpomys (Echimyidae) in the late Holocene of Argentina: The most recently extinct South American caviomorph genus1
- Late Cenozoic vertebrates from the Southern Pampean region: systematic and bio-chronostratigraphic update1
- Late Quaternary caviomorph rodents (Rodentia: Hystricognathi) from the Serra da Capivara, northeastern Brazil, with description of a new taxon1
- New remains of Late Pleistocene mammals from the Chuí Creek, Southern Brazil1
- The youngest record of phorusrhacid birds (Aves, Phorusrhacidae) from the late Pleistocene of Uruguay1
- Pleistocene mammals from Uruguay: Biostratigraphic, biogeographic and environmental connotations1
Each of the 35 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. 15 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 content3

Picture of Myocastor
- Source
- Wikidata/Commons
- Credit
- nobody named on the record
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
CT scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Myocastor coypus · UNMDP:Vertebrados FCEyN:2A
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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itEchimyidae through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Kerr 1782