Haplomylus speirianus

via iDigBio · CC0 · via iDigBio. 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
- HaplomylusPBDB
- Diet
- insectivorePBDB, for Macroscelidea
- Life habit
- ground dwellingPBDB, for Macroscelidea
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At most 8 million years on record.
Every occurrence read is dated to somewhere between 56 Mya and 48.07 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
177 occurrences of Haplomylus speirianus 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
177 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
6 formations
- Willwood Formation116
- Wasatch Formation19
- "Wasatch" Formation16
- DeBeque Formation7
- Wind River Formation3
- Indian Meadows Formation1
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The named rock units Haplomylus speirianus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 15 occurrences have no formation on record, which is common for older literature.
Haplomylus speirianus and its relatives
EoceneWhere Haplomylus speirianus and its relatives were recorded in the Eocene.
Found in the same rock
303 taxa- Cantius mckennai93 sites
- Hyopsodus loomisi86 sites
- Ectocion osbornianus79 sites
- Sifrhippus grangeri70 sites
- Diacodexis metsiacus66 sites
- Arenahippus aemulor59 sites
- Hyopsodus57 sites
- Esthonyx spatularius52 sites
- Coryphodon eocaenus49 sites
- Cardiolophus radinskyi46 sites
- Phenacodus intermedius46 sites
- Thryptacodon antiquus46 sites
- Phenacodus vortmani43 sites
- Coryphodon42 sites
- Homogalax protapirinus41 sites
- Rodentia39 sites
- Allognathosuchus36 sites
- Esthonyx bisulcatus36 sites
- Arfia shoshoniensis35 sites
- Paramys copei33 sites
- Apheliscus30 sites
- Diacodexis30 sites
- Phenacodus30 sites
- Tetonius matthewi29 sites
The Paleobiology Database records 175 sites for Haplomylus speirianus, 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
17 references- Stratigraphy and mammalian paleontology of the McCullough Peaks, northern Bighorn Basin, Wyoming: Implications for biochronology, basin development, and community reorganization across the Paleocene-Eocene boundary89
- Faunal Zonation of the Willwood Formation in the Central Bighorn Basin, Wyoming19
- Fossil mammals of the early Wasatchian Powder River local fauna, Eocene of northeast16
- Species diversity, tooth size, and shape of Haplomylus (Condylarthra, Hyopsodontidae) from the Powder River Basin, northeastern Wyoming15
- Fossil Mammalia from the early Wasatchian Four Mile fauna, Eocene of northwest Colorado11
- Early Eocene Mammalian Fauna of the Piceance Creek Basin. Northwestern Colorado7
- The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary5
- Early Eocene mammalian faunas and their environment in the vicinity of the Rock Springs Uplift, Wyoming4
- Geology and mammalian paleontology of the Wind River Formation, Laramie Basin, southeastern Wyoming3
- Early Eocene (Wasatchian) rodent assemblages from the Washakie Basin, Wyoming1
- Aceroryctes dulcis, a new palaeoryctid (Mammalia, Eutheria) from the early Eocene of the Wasatch Formation of southwestern Wyoming, USA1
- Early Eocene bats (Mammalia, Chiroptera) and other vertebrates in freshwater limestones of the Willlwood Formation, Clark's Fork Basin, Wyoming1
Each of the 177 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. 5 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 Haplomylus speirianus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Haplomylus speirianus 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 itHaplomylus through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Cope 1880)