Leptictidae

Ryan Somma · CC BY-SA 2.0 · via Wikidata/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
- LeptictidaPBDB
- Diet
- insectivore, carnivorePBDB
- Life habit
- ground dwellingPBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 31 million years on record.
The record covers at least 63.4 Mya to 31.8 Mya. No occurrence read is dated outside 66 Mya to 29.5 Mya.
334 occurrences of Leptictidae 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
334 occurrencesThese 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
40 formations
- Willwood Formation88
- Fort Union Formation46
- Wasatch Formation29
- Wind River Formation20
- Brule Formation · White River Group17
- DeBeque Formation13
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The named rock units Leptictidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 16 further formations hold fewer occurrences each and are not listed. 35 occurrences have no formation on record, which is common for older literature.
Leptictidae and its relatives
EoceneWhere Leptictidae and its relatives were recorded in the Eocene.
Found in the same rock
1,885 taxa- Coryphodon59 sites
- Hyopsodus55 sites
- Phenacodus vortmani48 sites
- Phenacolemurinae46 sites
- Haplomylus speirianus43 sites
- Prodiacodon tauricinerei43 sites
- Didelphodus absarokae40 sites
- Paramys copei40 sites
- Paramys excavatus39 sites
- Diacodexis38 sites
- Sifrhippus grangeri37 sites
- Esthonyx bisulcatus36 sites
- Palaeictops bicuspis36 sites
- Phenacodus36 sites
- Thryptacodon antiquus34 sites
- Diacodexis metsiacus33 sites
- Ectocion osbornianus33 sites
- Viverravus acutus32 sites
- Didymictis31 sites
- Prototomus30 sites
- Cantius abditus29 sites
- Vulpavus australis28 sites
- Apheliscus27 sites
- Esthonyx spatularius27 sites
The Paleobiology Database records 256 sites for Leptictidae, and this reads 240 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
108 references- Synonymies and reidentifications of North American fossil mammals43
- Faunal Zonation of the Willwood Formation in the Central Bighorn Basin, Wyoming32
- Stratigraphy and mammalian paleontology of the McCullough Peaks, northern Bighorn Basin, Wyoming: Implications for biochronology, basin development, and community reorganization across the Paleocene-Eocene boundary28
- The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary16
- Paleontology and biostratigraphy of lower part of Polecat Bench Formation, southern Bighorn Basin, Wyoming14
- Distribution and stratigraphic correlation of upper Paleocene and lower Eocene fossil mammal and plant localities of the Fort Union, Willwood, and Tatman formations, southern Bighorn Basin, Wyoming12
- Early Eocene Mammalian Fauna of the Piceance Creek Basin. Northwestern Colorado12
- The Tiffanian Land-Mammal Age (middle and late Paleocene) in the northern Bighorn Basin, Wyoming9
- Revision of the Wind River faunas, early Eocene of central Wyoming. Part 5. Geology and biostratigraphy of the upper part of the Wind River Formation, northeastern Wind River Basin8
- Elocene-Oligocene climatic change in North America: The White River Formation near Douglass, East-Central Wyoming5
- Early Eocene (Wasatchian) rodent assemblages from the Washakie Basin, Wyoming4
- Prodiacodon crustulum (Leptictidae, Mammalia) from the Tullock Member of the Fort Union Formation, Garfield and McCone Counties, Montana, USA4
Each of the 334 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. 96 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 content2

Picture of Leptictidae
- Source
- Wikidata/Commons
- Credit
- Ryan Somma
- Licence
- CC BY-SA 2.0
- 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
- Leptictidae indet. · UCMP:V:218857
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itLeptictida through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Gill 1872