Ectocion osbornianus

via iDigBio · 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
- EctocionPBDB
- Diet
- herbivorePBDB, for Phenacodontidae
- Life habit
- ground dwellingPBDB, for Phenacodontidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 1.5 million years on record.
The record covers at least 57.5 Mya to 56 Mya. No occurrence read is dated outside 60.9 Mya to 48.07 Mya.
280 occurrences of Ectocion osbornianus 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
280 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
9 formations
- Willwood Formation105
- Fort Union Formation50
- Wasatch Formation6
- DeBeque Formation5
- "Wasatch" Formation5
- Wind River Formation3
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The named rock units Ectocion osbornianus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 102 occurrences have no formation on record, which is common for older literature.
Ectocion osbornianus and its relatives
PaleoceneWhere Ectocion osbornianus and its relatives were recorded in the Paleocene.
Found in the same rock
401 taxa- Phenacodus intermedius133 sites
- Coryphodon76 sites
- Haplomylus speirianus71 sites
- Phenacodus vortmani61 sites
- Thryptacodon antiquus60 sites
- Didymictis protenus59 sites
- Sifrhippus grangeri54 sites
- Hyopsodus loomisi53 sites
- Diacodexis metsiacus49 sites
- Cantius mckennai47 sites
- Coryphodon eocaenus43 sites
- Esthonyx spatularius42 sites
- Arenahippus aemulor38 sites
- Allognathosuchus35 sites
- Haplomylus simpsoni35 sites
- Cardiolophus radinskyi31 sites
- Phenacodus31 sites
- Rodentia31 sites
- Hyopsodus29 sites
- Plesiadapis cookei29 sites
- Homogalax protapirinus28 sites
- Probathyopsis praecursor28 sites
- Viverravus acutus28 sites
- Azygonyx grangeri27 sites
The Paleobiology Database records 279 sites for Ectocion osbornianus, and this reads 240 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
24 references- The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary123
- Stratigraphy and mammalian paleontology of the McCullough Peaks, northern Bighorn Basin, Wyoming: Implications for biochronology, basin development, and community reorganization across the Paleocene-Eocene boundary82
- The Tiffanian Land-Mammal Age (middle and late Paleocene) in the northern Bighorn Basin, Wyoming23
- Faunal Zonation of the Willwood Formation in the Central Bighorn Basin, Wyoming15
- Early Eocene Mammalian Fauna of the Piceance Creek Basin. Northwestern Colorado5
- Fossil mammals of the early Wasatchian Powder River local fauna, Eocene of northeast5
- Additions to the latest Paleocene Buckman Hollow local fauna, Chappo Member of the Wasatch Formation, Lincoln County, southwestern Wyoming3
- Geology and mammalian paleontology of the Wind River Formation, Laramie Basin, southeastern Wyoming3
- Synonymies and reidentifications of North American fossil mammals2
- New earliest Wasatchian mammalian fauna from the Eocene of northwestern Wyoming: composition and diversity in a rarely sampled high-floodplain assemblage2
- Evolutionary History of Microsyopoidea (Mammalia, ?Primates) and the Relationship Between Plesiadapiformes and Primates2
- Krause, 19862
Each of the 280 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. 12 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 content2

Picture of Ectocion osbornianus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
CT scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Ectocion osbornianus · CM:VertPaleo:79144
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 itEctocion through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Cope 1882)