Hyopsodus

Hyopsodus is a genus of extinct early ungulate mammal of the family Hyopsodontidae, a group associated with or basal to the Perissodactyla. It was a small mammal with skull of about 6 cm in length. Fossils of this genus have been found in the Eocene of North America, especially the Bighorn Basin region of the United States. It has also been found in Eurasia.

Hyopsodus

Matthew Dillon · CC BY 2.0 · 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
HyopsodontidaePBDB
Diet
omnivorePBDB, for Hyopsodontidae
Life habit
scansorialPBDB, for Eutheria
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 16 million years on record.

The record covers at least 56 Mya to 39.7 Mya. No occurrence read is dated outside 57.5 Mya to 37 Mya.

Paleocene — about 2 of 1015 occurrencesPaleoceneEocene — about 1013 of 1015 occurrencesEocene58–57 Mya — about 0.3 occurrences57–57 Mya — about 1.0 occurrences57–56 Mya — about 25 occurrences56–55 Mya — about 118 occurrences55–54 Mya — about 118 occurrences54–54 Mya — about 118 occurrences54–53 Mya — about 118 occurrences53–52 Mya — about 118 occurrences52–52 Mya — about 118 occurrences52–51 Mya — about 83 occurrences51–50 Mya — about 25 occurrences50–49 Mya — about 25 occurrences49–49 Mya — about 25 occurrences49–48 Mya — about 25 occurrences48–47 Mya — about 22 occurrences47–47 Mya — about 22 occurrences47–46 Mya — about 20 occurrences46–45 Mya — about 4 occurrences45–44 Mya — about 4 occurrences44–44 Mya — about 4 occurrences44–43 Mya — about 4 occurrences43–42 Mya — about 4 occurrences42–42 Mya — about 4 occurrences42–41 Mya — about 4 occurrences41–40 Mya — about 4 occurrences40–39 Mya — about 2 occurrences39–39 Mya — about 0.4 occurrences39–38 Mya — about 0.4 occurrences38–37 Mya — about 0.3 occurrences37–37 Mya — about 0.1 occurrences56 Mya39.7 Mya58 Mya36.5 Mya

1,015 occurrences of Hyopsodus 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

1,015 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

46 formations

Willwood — 44.50°N, 108.00°WWillwood — 44.00°N, 108.00°WWillwood — 44.65°N, 109.93°WWillwood — 44.56°N, 108.70°WWillwood — 44.80°N, 109.10°WWillwood — 44.30°N, 109.00°WWillwood — 43.95°N, 107.57°WWillwood — 44.59°N, 108.86°WWillwood — 44.42°N, 108.69°WWillwood — 44.44°N, 108.63°WWillwood — 44.50°N, 108.67°WWillwood — 44.59°N, 108.62°WWillwood — 44.53°N, 108.43°WWillwood — 44.49°N, 108.81°WWillwood — 44.49°N, 108.54°WWillwood — 44.65°N, 108.54°WWillwood — 44.60°N, 108.32°WWillwood — 44.59°N, 108.41°WWillwood — 44.65°N, 108.72°WWillwood — 44.52°N, 108.57°WWillwood — 44.65°N, 108.90°WWillwood — 44.65°N, 108.83°WWillwood — 44.64°N, 108.76°WWillwood — 44.41°N, 108.79°WWillwood — 44.33°N, 108.77°WWillwood — 44.35°N, 108.75°WWillwood — 44.16°N, 107.87°WWillwood — 44.15°N, 107.86°WWind River — 44.00°N, 106.60°WWind River — 43.20°N, 107.10°WWind River — 43.20°N, 108.20°WWind River — 43.20°N, 107.33°WWasatch — 40.60°N, 108.10°WWasatch — 41.70°N, 109.00°WWasatch — 42.70°N, 110.10°WWasatch — 41.80°N, 107.00°WWasatch — 41.80°N, 110.70°WWasatch — 41.20°N, 110.50°WWasatch — 42.07°N, 109.10°WWasatch — 41.75°N, 108.00°WWasatch — 42.37°N, 108.91°WWasatch — 41.86°N, 110.78°WWasatch — 41.83°N, 110.75°WWasatch — 41.85°N, 110.75°WBridger — 42.70°N, 110.10°WBridger — 41.70°N, 109.00°WBridger — 41.20°N, 110.50°WBridger — 41.22°N, 109.72°WBridger — 42.42°N, 109.35°WBridger — 41.80°N, 110.70°WBridger — 41.77°N, 110.33°WBridger — 42.37°N, 108.91°WBridger — 41.37°N, 109.82°WBridger — 41.08°N, 110.10°WDeBeque — 40.00°N, 107.90°WDeBeque — 39.70°N, 107.60°WDeBeque — 39.20°N, 108.20°WSan Jose — 36.50°N, 107.00°WSan Jose — 35.70°N, 107.00°W"Wasatch" — 44.00°N, 106.60°WAycross — 43.70°N, 108.70°WAycross — 43.90°N, 110.80°WAycross — 44.30°N, 109.00°WHuerfano — 37.80°N, 105.10°WDevil's Graveyard — 29.20°N, 103.20°WDevil's Graveyard — 29.90°N, 104.20°WWagon Bed ("Tepee Trail") — 43.20°N, 107.10°WWashakie — 40.60°N, 108.10°WWashakie — 41.70°N, 109.00°WWashakie — 41.40°N, 108.29°WHannold Hill — 29.42°N, 103.14°WGreen River — 42.70°N, 110.10°WGreen River — 41.70°N, 109.00°WGreen River — 40.20°N, 109.90°WWiggins — 43.20°N, 108.20°WWiggins — 43.70°N, 108.70°WTepee Trail — 43.70°N, 108.70°WTepee Trail — 43.20°N, 108.20°WUinta — 40.07°N, 109.28°WUinta — 40.07°N, 109.70°WPass Peak — 42.70°N, 110.10°WGolden Valley — 46.90°N, 102.80°WIndian Meadows — 43.20°N, 108.20°WWapiti — 44.30°N, 109.00°W"Middle (?) Eocene Volcaniclastic Sequence" — 43.20°N, 107.10°WNaran Bulak — 44.62°N, 106.18°ENaran Bulak — 43.47°N, 100.37°ESuffolk Pebble Beds — 52.10°N, 1.32°E

Loading coastlines…

The named rock units Hyopsodus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 22 further formations hold fewer occurrences each and are not listed. 30 occurrences have no formation on record, which is common for older literature.

Hyopsodus and its relatives

Eocene

Where Hyopsodus and its relatives were recorded in the Eocene.

Found in the same rock

599 taxa

The Paleobiology Database records 786 sites for Hyopsodus, and this reads 240 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

96 references

Each of the 1,015 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. 84 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 Hyopsodus

Credit
Matthew Dillon
Licence
CC BY 2.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
Free Standard
Commercial use
cannot be read from the licence given — check the record

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 itHyopsodontidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Leidy 1870