Ignacius

Ignacius is a genus of extinct mammal from the early Cenozoic era. This genus is present in the fossil record from around 62-33 Ma. The earliest known specimens of Ignacius come from the Torrejonian of the Fort Union Formation, Wyoming and the most recent known specimens from Ellesmere Island in northern Canada. Ignacius is one of ten genera within the family Paromomyidae, the longest living family of any plesiadapiforms, persisting for around 30 Ma during the Paleocene and Eocene epochs. The analyses of postcranial fossils by paleontologists suggest that members of the family Paromomyidae, including the genus Ignacius, most likely possessed adaptations for arboreality.

Ignacius

Nobu Tamura Email:nobu.tamura@yahoo.com http://spinops.blogspot.com/ https://paleoexhibit.blogspot.com/ · 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
ParomomyidaePBDB
Diet
omnivorePBDB, for Primates
Life habit
arborealPBDB, for Primates
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 24 million years on record.

The record covers at least 61.66 Mya to 37 Mya. No occurrence read is dated outside 66 Mya to 33.9 Mya.

Late Cretaceous — about 0 of 80 occurrencesPaleocene — about 54 of 80 occurrencesPaleoceneEocene — about 26 of 80 occurrencesEoceneOligocene — about 0 of 80 occurrences67–66 Mya — about 0.1 occurrences66–64 Mya — about 0.3 occurrences64–63 Mya — about 0.4 occurrences63–62 Mya — about 2 occurrences62–61 Mya — about 2 occurrences61–60 Mya — about 10 occurrences60–59 Mya — about 12 occurrences59–58 Mya — about 12 occurrences58–57 Mya — about 9 occurrences57–56 Mya — about 7 occurrences56–54 Mya — about 5 occurrences54–53 Mya — about 5 occurrences53–52 Mya — about 5 occurrences52–51 Mya — about 5 occurrences51–50 Mya — about 0.4 occurrences50–49 Mya — about 0.4 occurrences49–48 Mya — about 0.3 occurrences47–45 Mya — about 0.1 occurrences45–44 Mya — about 0.2 occurrences44–43 Mya — about 0.2 occurrences43–42 Mya — about 0.2 occurrences42–41 Mya — about 0.2 occurrences41–40 Mya — about 0.2 occurrences40–39 Mya — about 0.0 occurrences38–37 Mya — about 0.1 occurrences37–35 Mya — about 0.4 occurrences35–34 Mya — about 0.4 occurrences34–33 Mya — about 0.2 occurrences61.66 Mya37 Mya66.6 Mya33.3 Mya

80 occurrences of Ignacius 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

80 occurrences

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

17 formations

Willwood — 44.30°N, 109.00°WWillwood — 44.00°N, 108.00°WWillwood — 44.50°N, 108.00°WWillwood — 44.65°N, 109.93°WWillwood — 44.51°N, 108.68°WWillwood — 44.65°N, 108.54°WWillwood — 44.66°N, 108.68°WWillwood — 44.66°N, 108.85°WWillwood — 44.15°N, 107.87°WFort Union — 47.80°N, 106.10°WFort Union — 41.70°N, 109.00°WFort Union — 46.90°N, 101.50°WFort Union — 44.72°N, 108.38°WFort Union — 43.20°N, 107.10°WFort Union — 45.40°N, 105.60°WFort Union — 43.45°N, 109.16°WFort Union — 41.92°N, 108.56°WFort Union — 44.30°N, 109.00°WFort Union — 44.72°N, 108.62°WFort Union — 39.27°N, 108.18°WFort Union — 44.66°N, 108.30°WFort Union — 44.91°N, 108.88°WPaskapoo — 51.00°N, 114.10°WPaskapoo — 51.90°N, 113.30°WPaskapoo — 52.20°N, 113.70°WPaskapoo — 51.18°N, 114.43°WPaskapoo — 51.50°N, 112.30°WPaskapoo — 52.20°N, 113.60°WPaskapoo — 52.35°N, 113.77°WPaskapoo — 54.80°N, 115.46°WPaskapoo — 53.23°N, 114.70°WPaskapoo — 51.11°N, 114.55°WGoler — 35.55°N, 117.83°WGoler — 35.50°N, 117.77°WRavenscrag — 49.70°N, 110.10°WRavenscrag — 49.06°N, 102.75°W"Wasatch" — 44.00°N, 106.60°WPorcupine Hills — 51.10°N, 114.28°WMargaret — 78.67°N, 81.90°WSlope — 46.70°N, 101.80°WWasatch — 41.80°N, 110.70°WHoback — 42.70°N, 110.10°WBlack Peaks — 29.20°N, 103.20°WBullion Creek — 47.03°N, 103.65°WMelville — 45.80°N, 109.80°WWagon Bed ("Tepee Trail") — 43.20°N, 107.10°WChadron — 46.10°N, 103.30°WWutu — 36.52°N, 118.92°E

Loading coastlines…

The named rock units Ignacius has been recovered from, largest first. Drawn where the rock is now, not where it formed. 14 occurrences have no formation on record, which is common for older literature.

Ignacius and its relatives

Paleocene

Where Ignacius and its relatives were recorded in the Paleocene.

Found in the same rock

765 taxa

The Paleobiology Database records 74 sites for Ignacius, 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

39 references

Each of the 80 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. 27 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 Ignacius

Credit
Nobu Tamura Email:nobu.tamura@yahoo.com http://spinops.blogspot.com/ https://paleoexhibit.blogspot.com/
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Ignacius graybullianus · usnm:paleobiology:421608

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 itParomomyidae through timeFormations of the PaleoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Matthew and Granger 1921)