Ignacius graybullianus

via iDigBio · 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
- IgnaciusPBDB
- Diet
- omnivorePBDB, for Primates
- Life habit
- arborealPBDB, for Primates
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At most 9.5 million years on record.
Every occurrence read is dated to somewhere between 57.5 Mya and 48.07 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
28 occurrences of Ignacius graybullianus 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
28 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
3 formations
Loading coastlines…
The named rock units Ignacius graybullianus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 occurrences have no formation on record, which is common for older literature.
Ignacius graybullianus and its relatives
EoceneWhere Ignacius graybullianus and its relatives were recorded in the Eocene.
Found in the same rock
238 taxa- Ectocion osbornianus21 sites
- Haplomylus speirianus17 sites
- Coryphodon16 sites
- Sifrhippus grangeri14 sites
- Hyopsodus12 sites
- Thryptacodon antiquus12 sites
- Esthonyx spatularius11 sites
- Phenacodus intermedius11 sites
- Phenacodus vortmani10 sites
- Phenacolemur simonsi10 sites
- Phenacodus9 sites
- Tinimomys graybulliensis9 sites
- Arctodontomys wilsoni8 sites
- Prodiacodon tauricinerei8 sites
- Apheliscus7 sites
- Cantius mckennai7 sites
- Eucosmodon ultimus7 sites
- Hyopsodus loomisi7 sites
- Phenacolemurinae7 sites
- Uintacyon rudis7 sites
- Apheliscus chydaeus6 sites
- Arfia zele6 sites
- Cardiolophus radinskyi6 sites
- Copecion brachypternus6 sites
The Paleobiology Database records 28 sites for Ignacius graybullianus, 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
10 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 boundary7
- The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary6
- Paromomyidae (?Dermoptera) from the Powder River Basin, Wyoming and a discussion of microevolution in closely related species5
- Faunal Zonation of the Willwood Formation in the Central Bighorn Basin, Wyoming3
- New basicrania of Paleocene-Eocene Ignacius: re-evaluation of the plesiadapiform-dermopteran link2
- Earliest Eocene mammalian fauna from the Paleocene-Eocene Thermal Maximum at Sand Creek Divide, southern Bighorn Basin, Wyoming1
- New Species of Hapalodectes (Mammalia, Mesonychia) from the Early Wasatchian, Early Eocene of Northwestern Wyoming1
- Krause, 19861
- New Palaeogene primate basicrania and the definition of the order Primates1
- New Omomyid Primates (Haplorhini, Tarsiiformes) from Middle Eocene Rocks of West-Central Hot Springs County, Wyoming1
Each of the 28 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. 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 Ignacius graybullianus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Ignacius graybullianus 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 itIgnacius through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Bown and Rose 1976