Trigonictis macrodon

Trigonictis macrodon is an extinct species of mammal related to the living grison (genus Galictis). It lived in North America during the Pliocene to Pleistocene epochs, from ~4.1–1.6 Ma. (AEO), existing for approximately 2.5 million years. Fossil specimens have been found across the United States, from Washington and Oregon in the northwest to California and Florida in the south.

Trigonictis macrodon

via iDigBio · CC0 · 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
TrigonictisPBDB
Diet
carnivore, omnivorePBDB, for Mustelidae
Life habit
scansorialPBDB, for Mustelidae
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 400 thousand years on record.

The record covers at least 1.8 Mya to 1.4 Mya. No occurrence read is dated outside 4.7 Mya to 210 ka.

Pliocene — about 24 of 42 occurrencesPliocenePleistocene — about 18 of 42 occurrencesPleistoceneHolocene — about 0 of 42 occurrences4.9–4.7 Mya — about 0.2 occurrences4.7–4.5 Mya — about 2 occurrences4.5–4.3 Mya — about 2 occurrences4.3–4.2 Mya — about 2 occurrences4.2–4.0 Mya — about 2 occurrences4.0–3.8 Mya — about 2 occurrences3.8–3.6 Mya — about 2 occurrences3.6–3.5 Mya — about 2 occurrences3.5–3.3 Mya — about 2 occurrences3.3–3.1 Mya — about 2 occurrences3.1–2.9 Mya — about 2 occurrences2.9–2.8 Mya — about 2 occurrences2.8–2.6 Mya — about 2 occurrences2.6–2.4 Mya — about 2 occurrences2.4–2.3 Mya — about 2 occurrences2.3–2.1 Mya — about 2 occurrences2.1–1.9 Mya — about 2 occurrences1.9–1.7 Mya — about 2 occurrences1.7–1.6 Mya — about 2 occurrences1.6–1.4 Mya — about 2 occurrences1.4–1.2 Mya — about 0.4 occurrences1.2–1.0 Mya — about 0.4 occurrences1.0–867 ka Mya — about 0.4 occurrences867 ka–693 ka Mya — about 0.3 occurrences693 ka–520 ka Mya — about 0.3 occurrences520 ka–347 ka Mya — about 0.3 occurrences347 ka–173 ka Mya — about 0.2 occurrences1.8 Mya – 1.4 Mya5.2 Mya0 Mya

42 occurrences of Trigonictis macrodon on record. 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

42 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

8 formations

Glenns Ferry — 42.80°N, 114.90°WPalm Spring — 32.90°N, 117.10°WGila Conglomerate — 32.84°N, 110.00°WTamiami — 27.37°N, 82.45°WBallard — 37.20°N, 100.30°WRexroad — 37.20°N, 100.30°WRingold — 46.30°N, 119.10°WCaloosahatchee — 27.04°N, 81.82°W

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The named rock units Trigonictis macrodon 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.

Found in the same rock

374 taxa

The Paleobiology Database records 42 sites for Trigonictis macrodon, 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

9 references

Each of the 42 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 Trigonictis macrodon

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itTrigonictis through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Cope 1868)