Tapirus polkensis
Tapirus polkensis, the pygmy tapir, is a small prehistoric tapir that lived in North America during the late Miocene and early Pliocene. T. polkensis had an estimated mass of around 125 kg (276 lb), making it smaller than any extant tapir.

Zilantophis · 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
- TapirusPBDB
- Diet
- browserPBDB, for Tapirus
- Life habit
- amphibiousPBDB, for Tapirus
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 11 million years on record.
The record covers at least 12.5 Mya to 1.4 Mya. No occurrence read is dated outside 16.3 Mya to 210 ka.
12 occurrences of Tapirus polkensis 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
12 occurrences- Miocene77%
- Pliocene14%
- Pleistocene10%
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
3 formations
- Peace River Formation · Hawthorn Group4
- Valentine Formation · Ogallala Group2
- Bone Valley Formation1
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The named rock units Tapirus polkensis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.
Tapirus polkensis and its relatives
MioceneWhere Tapirus polkensis and its relatives were recorded in the Miocene.
Found in the same rock
254 taxa- Cormohipparion emsliei5 sites
- Neohipparion eurystyle5 sites
- Borophagus hilli4 sites
- Dinohippus mexicanus4 sites
- Hexameryx simpsoni4 sites
- Desmathyus brachydontus3 sites
- Emydidae3 sites
- Enhydritherium terraenovae3 sites
- Floridameryx floridanus3 sites
- Phocidae3 sites
- Plionarctos3 sites
- Testudines3 sites
- Aelurodon ferox2 sites
- Amphicyonidae2 sites
- Anchitheriinae2 sites
- Anchitheriomys2 sites
- Arctonasua2 sites
- Bassariscus antiquus2 sites
- Borophagus pugnator2 sites
- Calippus2 sites
- Caretta2 sites
- Chelydra2 sites
- Colubrinae2 sites
- Corystosiren varguezi2 sites
The Paleobiology Database records 12 sites for Tapirus polkensis, 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- Cranial morphology and systematics of an extraordinary sample of the late Neogene dwarf tapir, Tapirus polkensis (Olsen)7
- Synonymies and reidentifications of North American fossil mammals2
- Late Miocene Tapirus (Mammalia, Perissodactyla) from Florida, with description of a new species, Tapirus webbi1
- Two new carnivores from an unusual late Tertiary forest biota in eastern North America1
- Age and faunal relationships of Tapiravus remains from Florida1
Each of the 12 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 Tapirus polkensis
- Source
- Wikipedia/Commons
- Credit
- Zilantophis
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Tapirus polkensis 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 itTapirus through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Olsen 1960)