Hilarcotherium

Hilarcotherium is an extinct genus of astrapotheriid mammals that lived in South America during the Middle Miocene (Laventan). The type species is H. castanedaii, found in sediments of the La Victoria Formation, part of the Honda Group in the department of Tolima in Colombia. In 2018, Carrillo et al. described a partial skull and mandible of a second species H. miyou from the Castilletes Formation in the Cocinetas Basin of northern Colombia, and estimated the body weight of the animal at 6,456 kilograms (14,233 lb).

Hilarcotherium

Rextron · 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
UruguaytheriinaePBDB
Diet
herbivorePBDB, for Astrapotheria
Life habit
scansorialPBDB, for Eutheria
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 2.1 million years on record.

The record covers at least 15.98 Mya to 13.8 Mya. No occurrence read is dated outside 20.45 Mya to 11 Mya.

Miocene — about 7 of 7 occurrencesMiocene21–20 Mya — about 0.2 occurrences20–20 Mya — about 0.3 occurrences20–20 Mya — about 0.3 occurrences20–19 Mya — about 0.3 occurrences19–19 Mya — about 0.3 occurrences19–19 Mya — about 0.3 occurrences19–18 Mya — about 0.3 occurrences18–18 Mya — about 0.3 occurrences18–17 Mya — about 0.3 occurrences17–17 Mya — about 0.3 occurrences17–17 Mya — about 0.3 occurrences17–16 Mya — about 0.3 occurrences16–16 Mya — about 0.3 occurrences16–16 Mya — about 0.3 occurrences16–15 Mya — about 0.3 occurrences15–15 Mya — about 0.3 occurrences15–15 Mya — about 0.3 occurrences15–14 Mya — about 0.3 occurrences14–14 Mya — about 0.3 occurrences14–14 Mya — about 0.2 occurrences14–13 Mya — about 0.2 occurrences13–13 Mya — about 0.2 occurrences13–13 Mya — about 0.2 occurrences13–12 Mya — about 0.2 occurrences12–12 Mya — about 0.2 occurrences12–12 Mya — about 0.2 occurrences12–11 Mya — about 0.1 occurrences11–11 Mya — about 0.1 occurrences15.98 Mya13.8 Mya20.9 Mya10.5 Mya

7 occurrences of Hilarcotherium 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

7 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

2 formations

Castilletes — 11.95°N, 71.32°WCastilletes — 11.95°N, 71.33°WLa Victoria — 3.78°N, 74.98°W

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The named rock units Hilarcotherium 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.

Hilarcotherium and its relatives

Miocene

Where Hilarcotherium and its relatives were recorded in the Miocene.

Found in the same rock

21 taxa

The Paleobiology Database records 6 sites for Hilarcotherium, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

Each of the 7 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Hilarcotherium

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

No 3D scan of Hilarcotherium 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 itUruguaytheriinae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Vallejo-Pareja et al. 2015