Anconodon
Anconodon is an extinct genus of mammal from the Paleocene of North America, and thus lived just after the "age of the dinosaurs". It was a member of the extinct order Multituberculata within the suborder Cimolodonta and possibly the family Cimolodontidae.

via iDigBio · CC0 · via iDigBio. 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
- CimolodontidaePBDB
- Diet
- omnivorePBDB, for Cimolodontidae
- Life habit
- arborealPBDB, for Ptilodontoidea
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Mammalia
Time the record covers
At most 5.9 million years on record.
Every occurrence read is dated to somewhere between 63.4 Mya and 57.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
30 occurrences of Anconodon 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
30 occurrences- Paleocene100%
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
6 formations
- Fort Union Formation9
- Paskapoo Formation6
- Porcupine Hills Formation4
- Nacimiento Formation2
- "Fort Union" (= Lebo) Formation2
- Hanna Formation1
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The named rock units Anconodon has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.
Anconodon and its relatives
PaleoceneWhere Anconodon and its relatives were recorded in the Paleocene.
Found in the same rock
260 taxa- Promioclaenus acolytus10 sites
- Ptilodus10 sites
- Bessoecetor septentrionalis9 sites
- Bryanictis microlestes9 sites
- Aphronorus fraudator8 sites
- Mesodma pygmaea8 sites
- Neoplagiaulax8 sites
- Tetraclaenodon puercensis8 sites
- Anisonchus sectorius7 sites
- Arctocyon corrugatus7 sites
- Haplaletes disceptatrix7 sites
- Litomylus dissentaneus7 sites
- Tricentes subtrigonus7 sites
- Mimetodon silberlingi6 sites
- Neoplagiaulacidae6 sites
- Acmeodon secans5 sites
- Arctocyon ferox5 sites
- Ectocion collinus5 sites
- Ignacius fremontensis5 sites
- Jepsenella praepropera5 sites
- Leptacodon munusculum5 sites
- Nannodectes intermedius5 sites
- Palenochtha minor5 sites
- Parectypodus sinclairi5 sites
The Paleobiology Database records 23 sites for Anconodon, 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
15 references- Paleontology and biostratigraphy of lower part of Polecat Bench Formation, southern Bighorn Basin, Wyoming5
- Late Cretaceous and Paleocene mammal localities of southern Alberta4
- The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary4
- First mammals from the Paleocene Porcupine Hills Formation of southwestern Alberta, Canada2
- Multituberculates (Mammalia, Allotheria) from the earliest Tiffanian (late Paleocene) Douglass Quarry, eastern Crazy Mountains Basin, Montana2
- Synonymies and reidentifications of North American fossil mammals2
- The succession of Paleocene mammals in western Canada2
- Paleocene and latest Cretaceous mammal ages, biozones, magnetozones, rates of sedimentation, and evolution2
- Late Torrejonian (middle Paleocene) mammals from south central Alberta, Canada1
- Paleocene mammalian biostratigraphy of the Carbon Basin, southeastern Wyoming, and age constraints on local phases of tectonism1
- The biogeographic origins of late Paleocene - early Eocene mammalian immigrants to the Western Interior of North America1
- Geologic setting of a new Paleocene mammal locality in the northern Powder River basin, Montana1
Each of the 30 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. 3 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 content1

Picture of Anconodon
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Anconodon 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.
The description on this site
- Source
- Wikipedia, “Anconodon”
- 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 itCimolodontidae through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Jepsen 1940