Dichodon

Dichodon is an extinct genus of Palaeogene artiodactyls belonging to the family Xiphodontidae. It was endemic to Western Europe and lived from the middle Eocene up to the earliest Oligocene. The genus was first erected by the British naturalist Richard Owen in 1848 based on dental remains from the fossil beds in Hordle, England. He noticed similar dentitions to contemporary artiodactyls like those of the Anoplotheriidae and Dichobunidae and references the name of the genus Dichobune. Eventually, it was found to be more closely related to Xiphodon and now includes 11 species, although one of them may be synonymous.

Dichodon

Ghedoghedo · 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
XiphodontidaePBDB
Diet
folivorePBDB
Life habit
ground dwellingPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB

Time the record covers

At most 15 million years on record.

Every occurrence read is dated to somewhere between 48.07 Mya and 33.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Eocene — about 43 of 43 occurrencesEoceneOligocene — about 0 of 43 occurrences49–48 Mya — about 0.0 occurrences48–48 Mya — about 0.1 occurrences48–47 Mya — about 0.1 occurrences47–47 Mya — about 0.1 occurrences47–46 Mya — about 0.1 occurrences46–46 Mya — about 0.1 occurrences46–45 Mya — about 0.1 occurrences45–45 Mya — about 0.1 occurrences45–44 Mya — about 0.1 occurrences44–44 Mya — about 0.1 occurrences44–43 Mya — about 0.1 occurrences43–43 Mya — about 0.1 occurrences43–42 Mya — about 0.1 occurrences42–41 Mya — about 0.1 occurrences41–41 Mya — about 0.3 occurrences41–40 Mya — about 2 occurrences40–40 Mya — about 2 occurrences40–39 Mya — about 2 occurrences39–39 Mya — about 2 occurrences39–38 Mya — about 2 occurrences38–38 Mya — about 2 occurrences38–37 Mya — about 3 occurrences37–37 Mya — about 4 occurrences37–36 Mya — about 4 occurrences36–36 Mya — about 4 occurrences36–35 Mya — about 4 occurrences35–35 Mya — about 4 occurrences35–34 Mya — about 4 occurrences34–34 Mya — about 4 occurrences34–33 Mya — about 0.0 occurrences48.6 Mya33.4 Mya

43 occurrences of Dichodon 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

43 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

8 formations

Creechbarrow Limestone — 50.65°N, 2.12°WHeadon Beds — 50.72°N, 1.59°WHeadon Hill — 50.72°N, 1.18°WBembridge Marls — 50.68°N, 1.09°WCollegats — 42.25°N, 1.08°EUpper Headon Beds — 50.63°N, 1.55°WPerrière — 44.38°N, 1.43°EMazaterón — 41.53°N, 2.12°W

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The named rock units Dichodon has been recovered from, largest first. Drawn where the rock is now, not where it formed. 32 occurrences have no formation on record, which is common for older literature.

Dichodon and its relatives

Eocene

Where Dichodon and its relatives were recorded in the Eocene.

Found in the same rock

401 taxa

The Paleobiology Database records 18 sites for Dichodon, 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

13 references

Each of the 43 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. 1 further reference is 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 Dichodon

Credit
Ghedoghedo
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Dichodon 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 itXiphodontidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Owen