Tremacyllus

Tremacyllus is an extinct genus of hegetotheriids. It lived from the Late Miocene to the Late Pleistocene and its fossilized remains were discovered in South America.

Tremacyllus

Uncredited · 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
PachyrukhiniPBDB
Diet
herbivorePBDB, for Notoungulata
Life habit
scansorialPBDB, for Eutheria
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 6.8 million years on record.

The record covers at least 7.246 Mya to 400 ka. No occurrence read is dated outside 11.63 Mya to 11.7 ka.

Miocene — about 22 of 42 occurrencesMiocenePliocene — about 18 of 42 occurrencesPliocenePleistocene — about 2 of 42 occurrencesPleistoceneHolocene — about 0 of 42 occurrences12–11 Mya — about 0.1 occurrences11–11 Mya — about 0.1 occurrences11–11 Mya — about 0.1 occurrences11–10 Mya — about 0.1 occurrences10–9.7 Mya — about 0.2 occurrences9.7–9.3 Mya — about 0.2 occurrences9.3–8.9 Mya — about 0.2 occurrences8.9–8.5 Mya — about 0.2 occurrences8.5–8.1 Mya — about 0.2 occurrences8.1–7.7 Mya — about 2 occurrences7.7–7.3 Mya — about 2 occurrences7.3–6.9 Mya — about 3 occurrences6.9–6.5 Mya — about 3 occurrences6.5–6.1 Mya — about 3 occurrences6.1–5.7 Mya — about 3 occurrences5.7–5.3 Mya — about 3 occurrences5.3–4.9 Mya — about 3 occurrences4.9–4.4 Mya — about 4 occurrences4.4–4.0 Mya — about 4 occurrences4.0–3.6 Mya — about 3 occurrences3.6–3.2 Mya — about 2 occurrences3.2–2.8 Mya — about 1 occurrence2.8–2.4 Mya — about 0.6 occurrences2.4–2.0 Mya — about 0.2 occurrences2.0–1.6 Mya — about 0.2 occurrences1.6–1.2 Mya — about 0.2 occurrences1.2–809 ka Mya — about 0.2 occurrences809 ka–404 ka Mya — about 0.0 occurrences404 ka–0 Mya — about 1 occurrence7.246 Mya400 ka12.1 Mya0 Mya

42 occurrences of Tremacyllus 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

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

17 formations

Cerro Azul — 38.74°S, 62.21°WCerro Azul — 38.77°S, 62.16°WCerro Azul — 37.37°S, 65.47°WCerro Azul — 35.69°S, 64.67°WCerro Azul — 35.92°S, 64.87°WCerro Azul — 36.68°S, 64.18°WCerro Azul — 37.02°S, 64.51°WCerro Azul — 36.25°S, 65.51°WCerro Azul — 36.70°S, 64.28°WCerro Azul — 37.73°S, 63.53°WCerro Azul — 37.22°S, 63.59°WMonte Hermoso — 38.97°S, 61.70°WAndalhuala — 26.68°S, 66.03°WAndalhuala — 26.82°S, 66.06°WAndalhuala — 27.22°S, 66.93°WAndalhuala — 26.90°S, 66.04°WAndalhuala — 26.68°S, 65.92°WSalicas — 28.33°S, 66.95°WVorohué — 38.03°S, 57.72°WRío Quinto — 33.48°S, 65.73°WLa Huertita — 34.91°S, 68.50°WBrochero — 31.78°S, 64.99°WIrene — 38.83°S, 60.54°WTunuyán — 33.83°S, 68.50°WPampean — 38.20°S, 59.12°WHuayquerías — 33.90°S, 68.46°WCollón Curá — 42.85°S, 69.46°WEpecuén — 37.22°S, 63.55°WRío de los Pozos — 33.30°S, 69.07°WChiquimil — 27.11°S, 66.83°WAraucanense — 26.90°S, 66.05°W

Loading coastlines…

The named rock units Tremacyllus 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.

Tremacyllus and its relatives

Miocene

Where Tremacyllus and its relatives were recorded in the Miocene.

Found in the same rock

360 taxa

The Paleobiology Database records 31 sites for Tremacyllus, 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

22 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. 10 further references are 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 Tremacyllus

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Tremacyllus was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itPachyrukhini through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ameghino 1891