Brachyrhynchocyon
Brachyrhynchocyon is an extinct genus of terrestrial carnivore, which belonged to the family Amphicyonidae of the suborder Caniformia.

Internet Archive Book Images · No restrictions · 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
- DaphoeninaePBDB
- Diet
- carnivorePBDB, for Amphicyonidae
- Life habit
- ground dwellingPBDB, for Amphicyonidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At most 5.2 million years on record.
Every occurrence read is dated to somewhere between 37 Mya and 31.8 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
30 occurrences of Brachyrhynchocyon 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
30 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
7 formations
- Chadron Formation8
- White River Formation8
- Renova Formation4
- Cypress Hills Formation1
- Cook Ranch Formation1
- "Titanotherium Beds" Formation1
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The named rock units Brachyrhynchocyon 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.
Brachyrhynchocyon and its relatives
EoceneWhere Brachyrhynchocyon and its relatives were recorded in the Eocene.
Found in the same rock
292 taxa- Brontotheriidae19 sites
- Hesperocyon gregarius14 sites
- Ischyromys veterior12 sites
- <Novacek leptictid>11 sites
- Leptomeryx speciosus11 sites
- Palaeolagus temnodon11 sites
- Hyracodon priscidens10 sites
- Trigenicus profectus10 sites
- Megalagus brachyodon9 sites
- Adjidaumo minimus8 sites
- Eotylopus reedi8 sites
- Leptomeryx mammifer8 sites
- Mesohippus bairdi8 sites
- Miniochoerus forsythae8 sites
- Centetodon chadronensis7 sites
- Dinictis7 sites
- Douglassciurus jeffersoni7 sites
- Equidae7 sites
- Hypisodus7 sites
- Pseudoprotoceras longinaris7 sites
- Archaeotherium coarctatum6 sites
- Aulolithomys bounites6 sites
- Chadrolagus emryi6 sites
- Didelphidae6 sites
The Paleobiology Database records 29 sites for Brachyrhynchocyon, 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
11 references- Synonymies and reidentifications of North American fossil mammals10
- Amphicyonidae5
- Geology, paleoecology, and paleoclimatology of the Chadron Formation4
- Magnetostratigraphy and biostratigraphy of the Eocene-Oligocene transition, southwestern Montana3
- Amphicyonidae2
- Eocene-Oligocene faunas of the Cypress Hills Formation, Saskatchewan1
- Mammalian paleontology and geology of the Yoder Member, Chadron Formation, east-central Wyoming1
- Preliminary biostratigraphy of the White River Group (Oligocene, Chadron and Brule formations) in the vicinity of Chadron, Nebraska1
- Carnivorous mammals of the Late Eocene and Early Oligocene of Trans-Pecos Texas1
- Correlation of the early Oligocene (Chadronian) in northwestern Nebraska1
- A new Oligocene dog1
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. 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 Brachyrhynchocyon
- Source
- Wikipedia/Commons
- Credit
- Internet Archive Book Images
- Licence
- No restrictions
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Brachyrhynchocyon 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.
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 itDaphoeninae through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Scott and Jepsen 1936