Mammacyon

Mammacyon is an extinct genus of medium-sized amphicyonids endemic to North America during the Late Oligocene and Early Miocene. It lived from 26.3 to 20.4 Ma, existing for approximately 6 million years.

Mammacyon

Ghedoghedo · CC BY-SA 4.0 · 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
TemnocyoninaePBDB
Diet
carnivorePBDB, for Amphicyonidae
Life habit
ground dwellingPBDB, for Amphicyonidae
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 4.2 million years on record.

The record covers at least 27.3 Mya to 23.1 Mya. No occurrence read is dated outside 41.03 Mya to 18.5 Mya.

Eocene — about 1 of 8 occurrencesEoceneOligocene — about 4 of 8 occurrencesOligoceneMiocene — about 3 of 8 occurrencesMiocene42–41 Mya — about 0.0 occurrences41–40 Mya — about 0.1 occurrences40–39 Mya — about 0.1 occurrences39–38 Mya — about 0.1 occurrences38–38 Mya — about 0.1 occurrences38–37 Mya — about 0.1 occurrences37–36 Mya — about 0.1 occurrences36–35 Mya — about 0.1 occurrences35–34 Mya — about 0.1 occurrences34–34 Mya — about 0.1 occurrences34–33 Mya — about 0.1 occurrences33–32 Mya — about 0.1 occurrences32–31 Mya — about 0.1 occurrences31–31 Mya — about 0.1 occurrences31–30 Mya — about 0.1 occurrences30–29 Mya — about 0.2 occurrences29–28 Mya — about 0.3 occurrences28–27 Mya — about 0.3 occurrences27–27 Mya — about 0.2 occurrences27–26 Mya — about 0.2 occurrences26–25 Mya — about 0.2 occurrences25–24 Mya — about 0.7 occurrences24–23 Mya — about 1 occurrence23–23 Mya — about 0.8 occurrences23–22 Mya — about 0.6 occurrences22–21 Mya — about 0.6 occurrences21–20 Mya — about 0.6 occurrences20–20 Mya — about 0.6 occurrences20–19 Mya — about 0.6 occurrences19–18 Mya — about 0.2 occurrences27.3 Mya23.1 Mya41.5 Mya18 Mya

8 occurrences of Mammacyon on record, most of them in the Oligocene. 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

8 occurrences

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

Monroe Creek — 43.30°N, 102.50°WMonroe Creek — 42.40°N, 103.80°WSharps — 43.30°N, 102.50°WHarrison — 43.00°N, 104.50°WPenney Farms — 29.28°N, 82.17°WYolomécatl — 17.46°N, 97.58°W

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The named rock units Mammacyon has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Mammacyon and its relatives

Oligocene

Where Mammacyon and its relatives were recorded in the Oligocene.

Found in the same rock

72 taxa

The Paleobiology Database records 8 sites for Mammacyon, 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

5 references

Each of the 8 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 Mammacyon

Credit
Ghedoghedo
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Mammacyon 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 itTemnocyoninae through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Loomis 1936