Thylacodon pusillus

Yale Peabody Museum · CC0 · via GBIF. 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
- ThylacodonPBDB
- Diet
- omnivorePBDB, for Marsupialia
- Life habit
- ground dwellingPBDB, for Herpetotheriidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Mammalia
Time the record covers
At most 8.8 million years on record.
Every occurrence read is dated to somewhere between 72.2 Mya and 63.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
17 occurrences of Thylacodon pusillus on record, most of them in the Paleocene. 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
17 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
- Hell Creek Formation5
- Fort Union Formation4
- Nacimiento Formation3
- Ferris Formation2
- Denver Formation1
- Tullock Formation1
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The named rock units Thylacodon pusillus 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.
Thylacodon pusillus and its relatives
PaleoceneWhere Thylacodon pusillus and its relatives were recorded in the Paleocene.
Found in the same rock
157 taxa- Mesodma8 sites
- Procerberus formicarum7 sites
- Baioconodon nordicus6 sites
- Mimatuta6 sites
- Puercolestes simpsoni6 sites
- Stygimys gratus6 sites
- Stygimys kuszmauli6 sites
- Betonnia tsosia5 sites
- Cimexomys minor5 sites
- Oxyprimus erikseni5 sites
- Protungulatum donnae5 sites
- Catopsalis alexanderi4 sites
- Mimatuta morgoth4 sites
- Odaxosaurus piger4 sites
- Peradectes4 sites
- Teleostei4 sites
- Allognathosuchus3 sites
- Catopsalis3 sites
- Choeroclaenus turgidunculus3 sites
- Cimolestidae3 sites
- Ectoconus ditrigonus3 sites
- Lepisosteidae3 sites
- Loxolophus hyattianus3 sites
- Mesodma ambigua3 sites
The Paleobiology Database records 17 sites for Thylacodon pusillus, 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
6 references- Synonymies and reidentifications of North American fossil mammals9
- Early Paleocene (Puercan) peradectid marsupials from northeastern Montana, North American Western Interior3
- The beginning of the age of mammals in the San Juan Basin, New Mexico; biostratigraphy and evolution of Paleocene mammals of the Nacimiento Formation2
- The phylogeny and evolution of Cretaceous–Palaeogene metatherians: cladistic analysis and description of new early Palaeocene specimens from the Nacimiento Formation, New Mexico1
- Paleocene vertebrate paleontology of the San Juan Basin, New Mexico1
- First North American land mammal ages of the Cenozoic era1
Each of the 17 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 Thylacodon pusillus
- Source
- GBIF
- Credit
- Yale Peabody Museum
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Thylacodon pusillus was found in MorphoSource and Sketchfab.
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 itThylacodon through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Matthew and Granger 1921)