Eutypomyidae

Eutypomyidae is a family of extinct rodents from the Eocene to Miocene of North America, often considered the sister taxon to beavers (Castoridae). Eutypomyids lived from the Wasatchian NALMA up to the Arikareean NALMA.

Eutypomyidae

Bureau of Land Management Oregon and Washington · Public Domain · 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
CastoroideaPBDB
Diet
herbivorePBDB, for Rodentia
Life habit
ground dwellingPBDB, for Rodentia
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 15 million years on record.

The record covers at least 39.7 Mya to 24.7 Mya. No occurrence read is dated outside 45.9 Mya to 18.5 Mya.

Eocene — about 30 of 53 occurrencesEoceneOligocene — about 21 of 53 occurrencesOligoceneMiocene — about 2 of 53 occurrencesMiocene46–45 Mya — about 0.4 occurrences45–45 Mya — about 0.9 occurrences45–44 Mya — about 0.9 occurrences44–43 Mya — about 0.9 occurrences43–42 Mya — about 0.9 occurrences42–41 Mya — about 0.9 occurrences41–40 Mya — about 0.9 occurrences40–39 Mya — about 3 occurrences39–38 Mya — about 3 occurrences38–37 Mya — about 4 occurrences37–36 Mya — about 4 occurrences36–35 Mya — about 4 occurrences35–34 Mya — about 4 occurrences34–33 Mya — about 4 occurrences33–32 Mya — about 4 occurrences32–31 Mya — about 3 occurrences31–30 Mya — about 3 occurrences30–29 Mya — about 3 occurrences29–28 Mya — about 0.6 occurrences28–27 Mya — about 0.6 occurrences27–27 Mya — about 0.6 occurrences27–26 Mya — about 0.6 occurrences26–25 Mya — about 0.7 occurrences25–24 Mya — about 2 occurrences24–23 Mya — about 1 occurrence23–22 Mya — about 0.4 occurrences22–21 Mya — about 0.4 occurrences21–20 Mya — about 0.4 occurrences20–19 Mya — about 0.4 occurrences19–18 Mya — about 0.2 occurrences39.7 Mya24.7 Mya46.4 Mya18 Mya

53 occurrences of Eutypomyidae 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

53 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

14 formations

Cypress Hills — 50.20°N, 107.60°WCypress Hills — 50.00°N, 107.90°WCypress Hills — 49.57°N, 109.88°WCypress Hills — 49.80°N, 109.00°WCypress Hills — 49.60°N, 108.80°WBrule — 43.30°N, 102.50°WBrule — 42.80°N, 103.10°WBrule — 42.40°N, 103.80°WBrule — 43.90°N, 102.40°WBrule — 43.20°N, 103.20°WBrule — 43.76°N, 101.93°WRenova — 45.00°N, 112.80°WRenova — 46.00°N, 112.00°WRenova — 46.40°N, 112.80°WRenova — 46.65°N, 113.05°WChadron — 42.40°N, 103.80°WChadron — 43.30°N, 102.50°WChadron — 46.10°N, 103.30°WChadron — 42.75°N, 103.65°WUinta — 40.17°N, 109.93°WUinta — 40.20°N, 109.30°WUinta — 40.08°N, 109.27°WChambers Tuff — 29.90°N, 104.20°WJohn Day — 44.90°N, 120.20°WJohn Day — 44.66°N, 120.27°WColmena Tuff — 29.90°N, 104.20°WLaredo — 27.53°N, 99.43°WWhite River — 43.20°N, 107.10°WMonroe Creek — 43.30°N, 102.50°WSharps — 43.30°N, 102.50°WFlorissant — 38.93°N, 105.28°WCatahoula — 31.66°N, 88.66°W

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The named rock units Eutypomyidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 occurrences have no formation on record, which is common for older literature.

Eutypomyidae and its relatives

Eocene

Where Eutypomyidae and its relatives were recorded in the Eocene.

Found in the same rock

782 taxa

The Paleobiology Database records 49 sites for Eutypomyidae, 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

35 references

Each of the 53 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. 23 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 Eutypomyidae

Credit
Bureau of Land Management Oregon and Washington
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Eutypomyidae 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.

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 itCastoroidea through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Miller and Gidley 1918