Metacheiromys

Metacheiromys is an extinct genus of placental mammals from extinct paraphyletic subfamily Metacheiromyinae within extinct paraphyletic family Metacheiromyidae in extinct order Palaeanodonta, that lived in North America from the early to middle Eocene.

Metacheiromys

Nobu Tamura · 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
MetacheiromyidaePBDB
Diet
insectivorePBDB, for Theria
Life habit
scansorialPBDB, for Eutheria
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At most 5.2 million years on record.

Every occurrence read is dated to somewhere between 51.1 Mya and 45.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Eocene — about 18 of 18 occurrencesEocene51–51 Mya — about 0.4 occurrences51–51 Mya — about 0.7 occurrences51–51 Mya — about 0.7 occurrences51–50 Mya — about 0.7 occurrences50–50 Mya — about 0.7 occurrences50–50 Mya — about 0.7 occurrences50–50 Mya — about 0.7 occurrences50–50 Mya — about 0.7 occurrences50–49 Mya — about 0.7 occurrences49–49 Mya — about 0.7 occurrences49–49 Mya — about 0.7 occurrences49–49 Mya — about 0.7 occurrences49–49 Mya — about 0.7 occurrences49–48 Mya — about 0.7 occurrences48–48 Mya — about 0.7 occurrences48–48 Mya — about 0.7 occurrences48–48 Mya — about 0.7 occurrences48–47 Mya — about 0.7 occurrences47–47 Mya — about 0.7 occurrences47–47 Mya — about 0.7 occurrences47–47 Mya — about 0.7 occurrences47–47 Mya — about 0.7 occurrences47–46 Mya — about 0.7 occurrences46–46 Mya — about 0.7 occurrences46–46 Mya — about 0.7 occurrences46–46 Mya — about 0.4 occurrences51.6 Mya45.4 Mya

18 occurrences of Metacheiromys 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

18 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

3 formations

Bridger — 41.70°N, 109.00°WBridger — 41.20°N, 110.50°WBridger — 41.80°N, 110.70°WGreen River — 41.80°N, 110.70°WFarisita — 37.80°N, 105.10°W

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The named rock units Metacheiromys has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Metacheiromys and its relatives

Eocene

Where Metacheiromys and its relatives were recorded in the Eocene.

Found in the same rock

117 taxa

The Paleobiology Database records 17 sites for Metacheiromys, 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

7 references

Each of the 18 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 content2

Picture of Metacheiromys

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

Photogrammetry

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Metacheiromys dasypus · amnh:fm:11718

Smithsonian Open Access was 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 itMetacheiromyidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Wortman 1903