Lambdotherium popoagicum

Henry Fairfield Osborn (d. 1935) · Public Domain · 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
- LambdotheriumPBDB
- Diet
- browserPBDB, for Brontotheriidae
- Life habit
- ground dwellingPBDB, for Brontotheriidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At most 11 million years on record.
Every occurrence read is dated to somewhere between 56 Mya and 45.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
67 occurrences of Lambdotherium popoagicum 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
67 occurrences- Eocene100%
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
8 formations
- Wind River Formation19
- Wasatch Formation16
- DeBeque Formation15
- Willwood Formation9
- Huerfano Formation4
- Green River Formation2
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The named rock units Lambdotherium popoagicum has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Lambdotherium popoagicum and its relatives
EoceneWhere Lambdotherium popoagicum and its relatives were recorded in the Eocene.
Found in the same rock
275 taxa- Hyracotherium vasacciense23 sites
- Coryphodon20 sites
- Hyopsodus20 sites
- Microsyops scottianus20 sites
- Paramys copei19 sites
- Heptodon posticus17 sites
- Hyopsodus wortmani17 sites
- Esthonyx acutidens16 sites
- Heptodon calciculus16 sites
- Didymictis altidens15 sites
- Diacodexis secans14 sites
- Perissodactyla14 sites
- Phenacodus vortmani14 sites
- Bunophorus sinclairi13 sites
- Cantius nunienus12 sites
- Paramys excavatus11 sites
- Absarokius abbotti10 sites
- Hyracotherium10 sites
- Protorohippus venticolum10 sites
- Cantius frugivorus9 sites
- Hyopsodus powellianus9 sites
- Meniscotherium chamense9 sites
- Notharctus venticolus9 sites
- Phenacodus9 sites
The Paleobiology Database records 65 sites for Lambdotherium popoagicum, 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
24 references- Early Eocene Mammalian Fauna of the Piceance Creek Basin. Northwestern Colorado15
- 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 Basin10
- Geology and mammalian paleontology of the New Fork-Big Sandy area, Sublette County, Wyoming7
- Synonymies and reidentifications of North American fossil mammals4
- Wapiti Valley Faunas: Early and Middle Eocene Fossil Vertebrates from the North Fork of the Shoshone River, Park County, Wyoming4
- Fossil Mammalia of the Huerfano Formation, Eocene, of Colorado3
- Preliminary analysis of the vertebrate fossil fauna of the Boysen Reservoir area3
- Magnetostratigraphy across the Wasatchian-Bridgerian boundary (early to middle Eocene) in the western Green River Basin, Wyoming2
- A New Species of Orohippus (Perissodactyla, Equidae) from the Early Eocene of Wyoming2
- A Further Study Of The Lower Eocene Mammalian Faunas Of Southwestern Wyoming2
- Two new Oligocene titanotheres2
- Stratigraphy, mammalian paleontology, paleoecology, and age correlation of the Wasatch Formation, Fossil Butte National Monument, Wyoming1
Each of the 67 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. 12 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 Lambdotherium popoagicum
- Source
- Wikidata/Commons
- Credit
- Henry Fairfield Osborn (d. 1935)
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Lambdotherium popoagicum 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itLambdotherium through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Cope 1880