Megalagus brachyodon

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
- MegalagusPBDB
- Diet
- grazer, browserPBDB, for Leporidae
- Life habit
- ground dwellingPBDB, for Leporidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At most 5.8 million years on record.
Every occurrence read is dated to somewhere between 39.7 Mya and 33.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
23 occurrences of Megalagus brachyodon 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
23 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
5 formations
- Chadron Formation7
- White River Formation6
- Renova Formation5
- Cypress Hills Formation1
- Dunbar Creek Formation1
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The named rock units Megalagus brachyodon has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.
Megalagus brachyodon and its relatives
EoceneWhere Megalagus brachyodon and its relatives were recorded in the Eocene.
Found in the same rock
279 taxa- Palaeolagus temnodon20 sites
- Brontotheriidae17 sites
- Ischyromys veterior17 sites
- <Novacek leptictid>13 sites
- Hesperocyon gregarius13 sites
- Leptomeryx speciosus13 sites
- Paradjidaumo trilophus10 sites
- Equidae9 sites
- Leptomeryx9 sites
- Micropternodus borealis9 sites
- Prosciurus vetustus9 sites
- Trigenicus profectus9 sites
- Apternodus mediaevus7 sites
- Bathygenys alpha7 sites
- Chadrolagus emryi7 sites
- Douglassciurus jeffersoni7 sites
- Herpetotherium fugax7 sites
- Herpetotherium valens7 sites
- Leptomeryx mammifer7 sites
- Oligoryctes cameronensis7 sites
- Poebrotherium7 sites
- Pseudoprotoceras longinaris7 sites
- Adjidaumo minimus6 sites
- Ankylodon6 sites
The Paleobiology Database records 23 sites for Megalagus brachyodon, 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
13 references- Magnetostratigraphy and biostratigraphy of the Eocene-Oligocene transition, southwestern Montana4
- Mammalian Range Zones in the Chadronian White River Formation at Flagstaff Rim, Wyoming4
- Correlation of the early Oligocene (Chadronian) in northwestern Nebraska4
- Eocene-Oligocene faunas of the Cypress Hills Formation, Saskatchewan2
- Eocene and Oligocene mammals from the Gravelly Range of Southwest Montana1
- A late Eocene (Chadronian) mammalian fauna from the White River Formation in Kings Canyon, northern Colorado1
- Tertiary paleontology of southwest Montana and adjacent Idaho1
- Pearson and Hoganson, 19951
- Elocene-Oligocene climatic change in North America: The White River Formation near Douglass, East-Central Wyoming1
- Personal communication regarding Tertiary faunal lists, Jefferson County, Montana1
- Oligocene calibration of the magnetic polarity time scale1
- Tertiary geology of the Beaver Rim area, Fremont and Natrona Counties, Wyoming1
Each of the 23 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. 1 further reference is 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 Megalagus brachyodon
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Megalagus brachyodon was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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 itMegalagus through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Matthew 1903)