Homacodontidae
Homacodontidae is an extinct family of basal artiodactyl mammals from the early Eocene to late Oligocene of North America, Europe, and Asia.

Carnegie Museum; Carnegie Museum of Natural History · Public Domain · 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
- DichobunoideaPBDB
- Diet
- grazer, browserPBDB, for Artiodactyla
- Life habit
- ground dwellingPBDB, for Artiodactyla
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Artiodactyla
Time the record covers
At least 10 million years on record.
The record covers at least 51.1 Mya to 41.03 Mya. No occurrence read is dated outside 56 Mya to 33.9 Mya.
177 occurrences of Homacodontidae on record, most of them in the Eocene. 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
177 occurrences- Eocene100%
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
22 formations
- Bridger Formation69
- Uinta Formation28
- Wasatch Formation27
- Friars Formation · La Jolla Group6
- Washakie Formation4
- Willwood Formation3
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The named rock units Homacodontidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 occurrences have no formation on record, which is common for older literature.
Homacodontidae and its relatives
EoceneWhere Homacodontidae and its relatives were recorded in the Eocene.
Found in the same rock
1,009 taxa- Antiacodon pygmaeus36 sites
- Omomys carteri23 sites
- Hyopsodus paulus22 sites
- Hyrachyus21 sites
- Hyopsodus minusculus20 sites
- Microsus cuspidatus19 sites
- Epihippus gracilis17 sites
- Hyrachyus modestus17 sites
- Sciuravus nitidus17 sites
- Hyopsodus16 sites
- Microsyops elegans16 sites
- Herpetotherium innominatum15 sites
- Paramys copei15 sites
- Washakius insignis15 sites
- Homacodon vagans14 sites
- Apatemys bellulus13 sites
- Herpetotherium knighti12 sites
- Protoreodon pumilus12 sites
- Scenopagus edenensis12 sites
- Sinopa rapax12 sites
- Orohippus pumilus11 sites
- Peradectes chesteri11 sites
- Rodentia11 sites
- Viverravus gracilis11 sites
The Paleobiology Database records 138 sites for Homacodontidae, 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
55 references- Paleontology and Geology of the Bridger Formation, Southern Green River Basin, Southwestern Wyoming. Part 7. Survey of Bridgerian Artiodactyla, including description of a skull and partial skeleton of Antiacodon pygmaeus35
- Mammalian Fauna From the Lower Bridger Formation (Bridger A, Early Middle Eocene) of the Southern Green River Basin, Wyoming22
- The Eocene Vertebrates of the Uinta Basin, Utah10
- Bunodont artiodactyls (Mammalia) from the Uintan (middle Eocene) of San Diego County, California7
- Magnetic stratigraphy and biostratigraphy of the middle Eocene Uinta Formation, Uinta Basin, Utah6
- A Further Study Of The Lower Eocene Mammalian Faunas Of Southwestern Wyoming6
- Stratigraphy, mammalian paleontology, paleoecology, and age correlation of the Wasatch Formation, Fossil Butte National Monument, Wyoming5
- Revision der Equoidea aus den eozänen Braunkohlen des Geiseltales bei Halle (DDR). (Revision of Equoidea from the Eocene lignite of the Geiseltal, Halle (DDR))5
- Basin margins, biodiversity, evolutionary innovation, and the origin of new taxa4
- Early Eocene mammalian faunas and their environment in the vicinity of the Rock Springs Uplift, Wyoming4
- A new genus and species of early Eocene (Ypresian) Artiodactyla (Mammalia), Gagadon minimonstrum, from Bitter Creek, Wyoming, U.S.A.3
- Biostratigraphy and magnetostratigraphy of the Bridgerian-Uintan Washakie Formation, Washakie Basin, Wyoming3
Each of the 177 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. 43 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 Homacodontidae
- Source
- Wikipedia/Commons
- Credit
- Carnegie Museum; Carnegie Museum of Natural History
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Homacodontidae 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
- 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 itDichobunoidea through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Marsh 1849)