Oldfieldthomasia

Oldfieldthomasia is an extinct genus of notoungulate, probably related to the suborder Typotheria. It lived during the Middle Eocene, in what is today South America.

Oldfieldthomasia

Florentino Ameghino · Public Domain · 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
OldfieldthomasiidaePBDB
Diet
herbivorePBDB, for Notoungulata
Life habit
scansorialPBDB, for Eutheria
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 6.9 million years on record.

The record covers at least 48 Mya to 41.03 Mya. No occurrence read is dated outside 56 Mya to 15.98 Mya.

Paleocene — about 0 of 25 occurrencesEocene — about 24 of 25 occurrencesEoceneOligocene — about 0 of 25 occurrencesOligoceneMiocene — about 0 of 25 occurrencesMiocene57–55 Mya — about 0.1 occurrences55–54 Mya — about 0.3 occurrences54–53 Mya — about 0.3 occurrences53–51 Mya — about 0.3 occurrences51–50 Mya — about 0.3 occurrences50–48 Mya — about 0.3 occurrences48–47 Mya — about 0.2 occurrences47–46 Mya — about 0.2 occurrences46–44 Mya — about 0.2 occurrences44–43 Mya — about 0.2 occurrences43–42 Mya — about 0.2 occurrences42–40 Mya — about 6 occurrences40–39 Mya — about 9 occurrences39–37 Mya — about 7 occurrences37–36 Mya — about 0.0 occurrences36–35 Mya — about 0.0 occurrences35–33 Mya — about 0.0 occurrences33–32 Mya — about 0.0 occurrences32–30 Mya — about 0.0 occurrences30–29 Mya — about 0.0 occurrences29–28 Mya — about 0.0 occurrences28–26 Mya — about 0.0 occurrences26–25 Mya — about 0.0 occurrences25–24 Mya — about 0.0 occurrences24–22 Mya — about 0.0 occurrences22–21 Mya — about 0.0 occurrences21–19 Mya — about 0.0 occurrences19–18 Mya — about 0.0 occurrences18–17 Mya — about 0.0 occurrences17–15 Mya — about 0.0 occurrences48 Mya41.03 Mya56.8 Mya15.2 Mya

25 occurrences of Oldfieldthomasia on record, most of them in the Eocene. 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

25 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

1 formation

Sarmiento — 44.42°S, 68.67°WSarmiento — 44.83°S, 68.25°WSarmiento — 45.67°S, 68.67°W

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The named rock units Oldfieldthomasia 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.

Oldfieldthomasia and its relatives

Eocene

Where Oldfieldthomasia and its relatives were recorded in the Eocene.

Found in the same rock

121 taxa

The Paleobiology Database records 16 sites for Oldfieldthomasia, 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

6 references

Each of the 25 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 Oldfieldthomasia

Credit
Florentino Ameghino
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Oldfieldthomasia 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 itOldfieldthomasiidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ameghino 1901