Thylacosmilus atrox

Ideonexus · CC BY-SA 2.0 · 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
- ThylacosmilusPBDB
- Diet
- carnivorePBDB, for Sparassodonta
- Life habit
- scansorialPBDB, for Theria
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Sparassodonta
Time the record covers
At least 1.7 million years on record.
The record covers at least 5.333 Mya to 3.6 Mya. No occurrence read is dated outside 8 Mya to 2.58 Mya.
11 occurrences of Thylacosmilus atrox 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 occurrencesThese 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
6 formations
- Cerro Azul Formation3
- Corral Quemado Formation3
- Epecuén Formation1
- Ituzaingo Formation1
- Brochero Formation1
- Monte Hermoso Formation1
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The named rock units Thylacosmilus atrox 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
331 taxa- Tremacyllus impressus4 sites
- Cardiomys3 sites
- Chorobates villosissimus3 sites
- Doellotatus inornatus3 sites
- Macroeuphractus retusus3 sites
- Nothura3 sites
- Palaeocavia3 sites
- Prodolichotis3 sites
- Proeuphractus3 sites
- Aspidocalyptus castroi2 sites
- Brachytherium cuspidatum2 sites
- Chasicotatus ameghinoi2 sites
- Cullinia2 sites
- Doellotatus chapadmalensis2 sites
- Eosclerocalyptus proximus2 sites
- Euphractini2 sites
- Hesperocynus2 sites
- Hoplophractus proximus2 sites
- Lagostomus pretrichodactyla2 sites
- Macrochorobates scalabrinii2 sites
- Macroeuphractus morenoi2 sites
- Orthomyctera2 sites
- Paedotherium minor2 sites
- Phlyctaenopyga ameghini2 sites
The Paleobiology Database records 8 sites for Thylacosmilus atrox, 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
8 references- Los marsupiales (Mammalia) del Mioceno Superior de la Formacion Cerro Azul(Provincia de La Pampa, Argentina)2
- Cuantificacion de la corteza cerebral en moldes endocraneanos de mamiferos girencefalos. Procedimiento y aplicacion en tres mamiferos extinguidos2
- Preliminary description of a new marsupial sabertooth fom the Pliocene of Argentina2
- Advances in the understanding of Neogene mammalian fauna in the Pampean region (central Argentina) through revising “biozone” hypotheses based on new dates and biochronological analyses1
- Late Cenozoic vertebrates from the Southern Pampean region: systematic and bio-chronostratigraphic update1
- Los Metatheria (Mammalia) del "Mesopotamiense" (Mioceno tardío) de la Provinciade Entre Ríos, Argentina, y una reconsideración de Philander entrerianus (Ameghino, 1899)1
- Vertebrados de la Formación Brochero (Mioceno Tardío-Plloceno) de Córdoba, Argentina1
- On the flight capabilities and distribution of the giant Miocene bird Argentavis magnificens (Teratornithidae)1
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 content3

Picture of Thylacosmilus atrox
- Source
- Wikidata/Commons
- Credit
- Ideonexus
- Licence
- CC BY-SA 2.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Thylacosmilus atrox · MLP:35-X-4-1
3D model
- Source
- Sketchfab
- Credit
- Virtual Curation Lab
- Licence
- CC Attribution-NonCommercial-NoDerivs
- Commercial use
- the licence does not allow it
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 itThylacosmilus through timeThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Riggs 1933