Stylinodontidae
Stylinodontidae is an extinct family of mammals from extinct superfamily Stylinodontoidea within extinct order Taeniodonta, that lived in North America from the early Paleocene to middle Eocene.

derivative work: user:The Explaner · 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
- TaeniodontaPBDB
- Diet
- herbivorePBDB
- Life habit
- ground dwellingPBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB
Time the record covers
At least 28 million years on record.
The record covers at least 66 Mya to 37.71 Mya. No occurrence read is dated outside 72.2 Mya to 27.3 Mya.
145 occurrences of Stylinodontidae on record, most of them in the Paleocene. 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
145 occurrences- Late Cretaceousunder 1%
- Paleocene51%
- Eocene48%
- Oligoceneunder 1%
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
23 formations
- Willwood Formation28
- Nacimiento Formation23
- DeBeque Formation19
- Fort Union Formation17
- Wasatch Formation10
- Bridger Formation8
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The named rock units Stylinodontidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.
Stylinodontidae and its relatives
PaleoceneWhere Stylinodontidae and its relatives were recorded in the Paleocene.
Found in the same rock
951 taxa- Phenacodus vortmani31 sites
- Ectoganus lobdelli28 sites
- Ectoganus25 sites
- Psittacotherium multifragum23 sites
- Coryphodon22 sites
- Ectocion osbornianus19 sites
- Esthonyx bisulcatus17 sites
- Hyopsodus17 sites
- Phenacodus17 sites
- Ectoganus gliriformis16 sites
- Periptychus carinidens15 sites
- Phenacodus intermedius15 sites
- Stylinodon mirus15 sites
- Tetraclaenodon puercensis14 sites
- Paramys copei13 sites
- Tricentes subtrigonus13 sites
- Anisonchus sectorius12 sites
- Protoselene opisthacus12 sites
- Vulpavus australis12 sites
- Didymictis protenus11 sites
- Paramys excavatus11 sites
- Phenacodus grangeri11 sites
- Plesiadapis dubius11 sites
- Promioclaenus acolytus11 sites
The Paleobiology Database records 143 sites for Stylinodontidae, 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
43 references- Synonymies and reidentifications of North American fossil mammals38
- Systematics, Functional Morphology and Macroevolution of the Extinct Mammalian Order Taeniodonta16
- Stratigraphy and mammalian paleontology of the McCullough Peaks, northern Bighorn Basin, Wyoming: Implications for biochronology, basin development, and community reorganization across the Paleocene-Eocene boundary11
- The Tiffanian Land-Mammal Age (middle and late Paleocene) in the northern Bighorn Basin, Wyoming10
- Paleocene vertebrate paleontology of the San Juan Basin, New Mexico9
- Earliest Eocene mammalian fauna from the Paleocene-Eocene Thermal Maximum at Sand Creek Divide, southern Bighorn Basin, Wyoming8
- Mammalian Fauna From the Lower Bridger Formation (Bridger A, Early Middle Eocene) of the Southern Green River Basin, Wyoming5
- New Conoryctines (Mammalia: Taeniodonta) from the Middle Paleocene (Torrejonian) of Western North America5
- The Kutz Canyon Local Fauna, Torrejonian (Middle Paleocene) of the San Juan Basin, New Mexico;4
- New Specimens of the Rare Taeniodont Wortmania (Mammalia: Eutheria) from the San Juan Basin of New Mexico and Comments on the Phylogeny and Functional Morphology of “Archaic” Mammals3
- Cf. Wortmania from the early Paleocene of Montana and an evaluation of the fossil record of the initial diversification of the Taeniodonta (Mammalia)2
- Biostratigraphy and magnetostratigraphy of the Bridgerian-Uintan Washakie Formation, Washakie Basin, Wyoming2
Each of the 145 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. 31 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 Stylinodontidae
- Source
- Wikipedia/Commons
- Credit
- derivative work: user:The Explaner
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Stylinodontidae 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 itTaeniodonta through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Marsh 1875)