Abrocoma
Abrocoma is a genus of abrocomid rodents found in the Andes of South America, from southern Peru to central Chile. The genus contains eight species, most of which are found in isolated mountain ranges in northwestern Argentina. The oldest fossil record for the Caviomorpha appears at the late Eocene-Early Oligocene transition. The Abrocoma has an interesting body structure for example within its own head it has a sac that contains a liquid that is not named by Janet K. Braun and Michael A. Mares(894). They also have feet that are padded which helped to completely say with certainty that it is a rock dweller but also a rock climber.(896).
The zoology of the voyage of H.M.S. Beagle · Public Domain · 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- Sits inside
- AbrocomidaePBDB
- Diet
- herbivorePBDB, for Abrocomidae
- Life habit
- ground dwellingPBDB, for Abrocomidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 4.8 million years on record.
The record covers at least 5 Mya to 129 ka. No occurrence read is dated outside 8 Mya to 11.7 ka.
11 occurrences of Abrocoma on record. 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
11 occurrences- Miocene37%
- Pliocene30%
- Pleistocene33%
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
5 formations
- San Andres Formation3
- Chiquimil Formation3
- Laguna de Tagua Tagua Formation2
- Toro Negro Formation1
- Cerro Azul Formation1
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The named rock units Abrocoma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Found in the same rock
120 taxa- Neophanomys4 sites
- Octodontoidea4 sites
- Abalosia castellanosi3 sites
- Chasicotatus ameghinoi3 sites
- Ctenomys chapalmalensis3 sites
- Eumysops3 sites
- Lagostomus3 sites
- Phtoramys3 sites
- Tetrastylus3 sites
- Tetrastylus intermedius3 sites
- Thylamys3 sites
- Chasicomys2 sites
- Dolichotis2 sites
- Dolichotis salinicola2 sites
- Eucelophorus chapalmalensis2 sites
- Microcavia2 sites
- Neophanomys biplicatus2 sites
- Neuryurus2 sites
- Orthomyctera2 sites
- Palaeocavia2 sites
- Pithanotomys2 sites
- Proscelidodon gracillimus2 sites
- Reithrodon auritus2 sites
- Rodentia2 sites
The Paleobiology Database records 9 sites for Abrocoma, 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
7 references- Cronobioestratigrafía del Mioceno tardío – Plioceno temprano, Puerta de Corral Quemado y Villavil, provincia de Catamarca, Argentina3
- Taguatagua 1: New insights into the late Pleistocene fauna, paleoenvironment, and human subsistence in a unique lacustrine context in central Chile2
- The caviomorph rodents from the San Andrés Formation, east-central Argentina, and global Late Pliocene climatic change2
- Leftover prey remains: a new taphonomic mode from the Late Miocene Cerro Azul Formation of Central Argentina1
- Roedores y Marsupiales en Torno Al Límite Pleistoceno/Holoceno en Catamarca, Argentina: Extinciones y Evolución Ambiental1
- Estratigrafía y mamíferos fósiles de la Formación Toro Negro (Neógeno), Departamento Vinchina, noroeste de la provincia de La Rioja, Argentina1
- Reassesment of the Pliocene-Pleistocene continental time scale of Southern South America. Correlation of the type Chapadmalalan with Bolivian sections1
Each of the 11 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 content1
Picture of Abrocoma
- Source
- Wikipedia/Commons
- Credit
- The zoology of the voyage of H.M.S. Beagle
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Abrocoma was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Abrocoma”
- 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 itAbrocomidae through timeThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Waterhouse 1837