Amphicyon longiramus

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
- AmphicyonPBDB
- 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 8 million years on record.
Every occurrence read is dated to somewhere between 20.45 Mya and 12.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
5 occurrences of Amphicyon longiramus on record, most of them in the Miocene. 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
5 occurrences- Miocene100%
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
4 formations
- Calvert Formation · Chesapeake Group1
- Alachua Formation1
- Oakville Formation1
- Fleming Formation1
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The named rock units Amphicyon longiramus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Amphicyon longiramus and its relatives
MioceneWhere Amphicyon longiramus and its relatives were recorded in the Miocene.
Found in the same rock
260 taxa- Archaeohippus blackbergi3 sites
- Parahippus leonensis3 sites
- Blastomerycinae2 sites
- Harrymys magnus2 sites
- Hipparionini2 sites
- Marshochoerus socialis2 sites
- Menoceras barbouri2 sites
- Merycoidodontidae2 sites
- Metatomarctus canavus2 sites
- Prosynthetoceras texanus2 sites
- Tayassuidae2 sites
- Aelurodon ferox1 site
- Aepycamelus1 site
- Alligator1 site
- Alligator olseni1 site
- Ameiseophis robinsoni1 site
- Anchitheriomys1 site
- Anchitherium1 site
- Anchitherium clarencei1 site
- Anchitherium navasotae1 site
- Anhinga subvolans1 site
- Anilioides minuatus1 site
- Anthracotheriidae1 site
- Apalone lima1 site
The Paleobiology Database records 5 sites for Amphicyon longiramus, 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
3 references- Miocene carnivores, Texas Coastal Plain3
- Synonymies and reidentifications of North American fossil mammals1
- The Lower Miocene mammal fauna of Florida1
Each of the 5 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 Amphicyon longiramus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
Structured light scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Amphicyon longiramus · UF:VP:6501
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 itAmphicyon through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. White 1942