Eoconodon
Eoconodon is an extinct genus of triisodontid that existed during the early Paleocene of North America. Characteristics of the genus include massive jaws, blunt builds, and strong canine teeth.

mark byzewski · CC BY 2.0 · 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
- TriisodontidaePBDB
- Diet
- omnivorePBDB, for Triisodontidae
- Life habit
- scansorialPBDB, for Eutheria
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At most 2.6 million years on record.
Every occurrence read is dated to somewhere between 66 Mya and 63.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
31 occurrences of Eoconodon 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
31 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
7 formations
- Fort Union Formation14
- Nacimiento Formation8
- Tullock Formation3
- Ferris Formation2
- Denver Formation2
- Ravenscrag Formation1
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The named rock units Eoconodon has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Eoconodon and its relatives
PaleoceneWhere Eoconodon and its relatives were recorded in the Paleocene.
Found in the same rock
158 taxa- Puercolestes simpsoni9 sites
- Cimolestidae6 sites
- Thylacodon pusillus6 sites
- Betonnia tsosia5 sites
- Loxolophus hyattianus5 sites
- Mithrandir gillianus5 sites
- Oxyacodon ferronensis5 sites
- Choeroclaenus turgidunculus4 sites
- Ectoconus ditrigonus4 sites
- Onychodectes tisonensis4 sites
- Oxyclaenus simplex4 sites
- Periptychus coarctatus4 sites
- Wortmania otariidens4 sites
- Haploconus entoconus3 sites
- Hemithlaeus kowalevskianus3 sites
- Microcosmodon harleyi3 sites
- Opisthotriton kayi3 sites
- Oxyacodon agapetillus3 sites
- Oxyacodon apiculatus3 sites
- Oxyclaenus cuspidatus3 sites
- Peradectes3 sites
- Peradectes minor3 sites
- Ptilodus tsosiensis3 sites
- Anisonchus oligistus2 sites
The Paleobiology Database records 23 sites for Eoconodon, 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
10 references- Eoconodon ("Triisodontidae", Mammalia) from the Early Paleocene (Puercan) of northeastern Montana, USA14
- The beginning of the age of mammals in the San Juan Basin, New Mexico; biostratigraphy and evolution of Paleocene mammals of the Nacimiento Formation6
- Exceptional continental record of biotic recovery after the Cretaceous–Paleogene mass extinction2
- A new important record of earliest Cenozoic mammalian history: geologic setting, Multituberculata, and Peradectia2
- The beginning of the Age of Mammals2
- A new species of Eoconodon (Triisodontidae, Mammalia) from the San Juan Basin, New Mexico1
- Mammals and mollusks across the Cretaceous-Tertiary boundary from Makoshika State Park and vicinity (Williston Basin), Montana1
- Paleocene vertebrate paleontology of the San Juan Basin, New Mexico1
- The succession of Paleocene mammals in western Canada1
- Paleocene (Puercan-Torrejonian) mammalian faunas of the North Horn Formation, central Utah1
Each of the 31 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 content2
Picture of Eoconodon
- Source
- Wikipedia/Commons
- Credit
- mark byzewski
- Licence
- CC BY 2.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Eoconodon sp. · dmnh:epv:130976
The description on this site
- Source
- Wikipedia, “Eoconodon”
- 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 itTriisodontidae through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Matthew and Granger 1921