Schizotheriinae
Chalicotheriidae is an extinct family of herbivorous, perissodactyl mammals. Unlike living odd-toed ungulates, chalicotheres bore large claws on their hands rather than hooves, thought to have been used for grasping vegetation, with their dentition being adapted for browsing. The family is known from the Oligocene to the Pleistocene, reached its greatest diversity in the Miocene, and is known from Asia, Europe, Africa and North America. Asia appears to have been the main centre of diversification for the group.

Postdlf · CC BY-SA 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
- ChalicotheriidaePBDB
- Diet
- browserPBDB, for Chalicotherioidea
- Life habit
- ground dwellingPBDB, for Chalicotherioidea
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 20 million years on record.
The record covers at least 23.04 Mya to 2.58 Mya. No occurrence read is dated outside 29.5 Mya to 774 ka.
70 occurrences of Schizotheriinae 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
70 occurrences- Oligocene4%
- Miocene74%
- Pliocene11%
- Pleistocene11%
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
20 formations
- Sheep Creek Formation10
- Shungura Formation · Omo Group5
- Vogel River Series Formation5
- Arikaree Formation4
- Xianshuihe Formation4
- Mytilinii Formation3
Loading coastlines…
The named rock units Schizotheriinae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 25 occurrences have no formation on record, which is common for older literature.
Schizotheriinae and its relatives
MioceneWhere Schizotheriinae and its relatives were recorded in the Miocene.
Found in the same rock
1,012 taxa- Ancylotherium22 sites
- Hipparion20 sites
- Gazella19 sites
- Tylocephalonyx skinneri17 sites
- Ancylotherium pentelicum11 sites
- Tragelaphus9 sites
- Aphelops megalodus8 sites
- Bovidae8 sites
- Ceratotherium simum8 sites
- Merychyus relictus8 sites
- Palaeoloxodon recki8 sites
- Brachycrus laticeps7 sites
- Ceratotherium7 sites
- Cynarctoides acridens7 sites
- Dihoplus pikermiensis7 sites
- Felis7 sites
- Helladotherium duvernoyi7 sites
- Rhinocerotidae7 sites
- Teleoceras americanum7 sites
- Adcrocuta eximia6 sites
- Giraffa jumae6 sites
- Hylochoerus euilus6 sites
- Orycteropus6 sites
- Osbornodon fricki6 sites
The Paleobiology Database records 69 sites for Schizotheriinae, 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
42 references- Tylocephalonyx, a new genus of North American dome-skulled chalicotheres (Mammalia, Perissodactyla)15
- Miocene mammals of the Split Rock area, Granite Mountains basin, central Wyoming4
- The Late Miocene Mammal Faunas of the Mytilinii Basin, Samos Island, Greece: New Collection. 10. Chalicotheriidae3
- Plio-Pleistocene terrestrial mammal assemblage from Konso, Southern Ethiopia3
- Chalicotheriidae (Mammalia, Perissodactyla) remains from Laetoli3
- Preliminary remarks on the Late Miocene herbivores of Kerassiá (Northern Euboea, Greece)2
- Mid-Tertiary chalicothere (Perissodactyla) fossils from Lanzhou, Gansu, China2
- The Chinese Neogene mammalian biochronology - its correlation with the European Neogene mammal zonation2
- The Omo Micromammals: Systematics and Paleoecology of Early Man Sites from Ethiopia2
- Catalogue of Tertiary Fossil Sites of the Land Mammals in the U.S.S.R.2
- The middle Miocene mammalian site of Belometchetskaya, North Caucasus: an important biostratigraphic link between Europe and China1
- The early Hemingfordian (early Miocene) Pollack Farm local fauna; first Tertiary land mammals described from Delaware1
Each of the 70 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. 30 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 Schizotheriinae
- Source
- Wikipedia/Commons
- Credit
- Postdlf
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Schizotheriinae 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 itChalicotheriidae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Holland and Peterson 1913)