Nannippus
Nannippus is an extinct genus of three-toed horse endemic to North America during the Miocene through Pleistocene, about 13.3—1.8 million years ago (Mya), living around 11.5 million years. This ancient species of three-toed horse grew up to 3.5 feet and weighed between 165 pounds to 199 pounds, which was around the same size as a domestic sheep.
Conty · CC BY 3.0 · 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
- HipparioniniPBDB
- Diet
- grazerPBDB
- Life habit
- ground dwellingPBDB, for Equinae
- 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 13.82 Mya to 2.58 Mya. No occurrence read is dated outside 23.04 Mya to 11.7 ka.
175 occurrences of Nannippus 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
175 occurrences- Miocene51%
- Pliocene32%
- Pleistocene17%
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
32 formations
- Ash Hollow Formation · Ogallala Group11
- Peace River Formation · Hawthorn Group10
- Ogallala Formation7
- St. David Formation6
- Alachua Formation5
- Tamiami Formation5
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The named rock units Nannippus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 further formations hold fewer occurrences each and are not listed. 74 occurrences have no formation on record, which is common for older literature.
Nannippus and its relatives
MioceneWhere Nannippus and its relatives were recorded in the Miocene.
Found in the same rock
1,410 taxa- Equus41 sites
- Neohipparion eurystyle35 sites
- Gomphotheriidae33 sites
- Platygonus30 sites
- Camelidae28 sites
- Hemiauchenia22 sites
- Plesippus simplicidens22 sites
- Antilocapridae19 sites
- Pleiolama vera19 sites
- Hippotherium18 sites
- Camelops17 sites
- Cormohipparion ingenuum16 sites
- Sigmodon minor16 sites
- Borophagus15 sites
- Epicyon saevus15 sites
- Spermophilus15 sites
- Aphelops mutilus14 sites
- Epicyon haydeni14 sites
- Megalonyx14 sites
- Tayassuinae14 sites
- Cormohipparion emsliei13 sites
- Canis lepophagus12 sites
- Dinohippus mexicanus12 sites
- Teleoceras12 sites
The Paleobiology Database records 170 sites for Nannippus, 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
74 references- Synonymies and reidentifications of North American fossil mammals39
- Phylogenetic Interrelationships and Evolution of North American Late Equidae10
- Cormohipparion and Hipparion (Mammalia, Perissodactyla, Equidae) from the Late Neogene of Florida10
- Cenozoic Vertebrate Localities and Faunas in Arizona7
- Late Miocene Nannippus (Mammalia: Perissodactyla) from Florida, with a description of the smallest Hipparionine horse6
- Late Pliocene (late Blancan) vertebrates from the St. Petersburg Times site, Pinellas County, Florida, with a brief review of Florida Blancan faunas5
- Dietary Change and Evolution of Horses in North America4
- Vertebrate biostratigraphy of the Ogallala Group in Nebraska4
- Carcharocles megalodon unpublished collections from Natural History Museums around the world3
- A new early Pleistocene tapir (Mammalia: Perissodactyla) from Florida, with a review of Blancan tapirs from around the state3
- Overview of the geology and vertebrate biochronology of the Leisey Shell Pit Local Fauna, Hillsborough County, Florida3
- Biostratigraphy and magnetostratigraphy, late Pliocene rocks, 111 Ranch, Arizona3
Each of the 175 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. 62 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 content3
Picture of Nannippus
- Source
- Wikipedia/Commons
- Credit
- Conty
- Licence
- CC BY 3.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Nannippus aztecus · UF:VP:302417
3D model
- Source
- Sketchfab
- Credit
- UIPaleoRepository
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
The description on this site
- Source
- Wikipedia, “Nannippus”
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
Everything alive alongside itHipparionini through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Matthew 1926)