Mesodma ambigua

Mesodma ambigua

via iDigBio · CC0 · via iDigBio. 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
MesodmaPBDB
Diet
omnivorePBDB, for Neoplagiaulacidae
Life habit
arborealPBDB, for Ptilodontoidea
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Mammalia

Time the record covers

At most 8.8 million years on record.

Every occurrence read is dated to somewhere between 72.2 Mya and 63.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 1 of 7 occurrencesLate CretaceousPaleocene — about 6 of 7 occurrencesPaleocene72–72 Mya — about 0.0 occurrences72–72 Mya — about 0.1 occurrences72–71 Mya — about 0.1 occurrences71–71 Mya — about 0.1 occurrences71–71 Mya — about 0.1 occurrences71–70 Mya — about 0.1 occurrences70–70 Mya — about 0.1 occurrences70–70 Mya — about 0.1 occurrences70–69 Mya — about 0.1 occurrences69–69 Mya — about 0.1 occurrences69–69 Mya — about 0.1 occurrences69–68 Mya — about 0.1 occurrences68–68 Mya — about 0.1 occurrences68–68 Mya — about 0.1 occurrences68–67 Mya — about 0.1 occurrences67–67 Mya — about 0.1 occurrences67–67 Mya — about 0.1 occurrences67–66 Mya — about 0.1 occurrences66–66 Mya — about 0.1 occurrences66–66 Mya — about 0.4 occurrences66–66 Mya — about 0.8 occurrences66–65 Mya — about 0.8 occurrences65–65 Mya — about 0.8 occurrences65–65 Mya — about 0.8 occurrences65–64 Mya — about 0.8 occurrences64–64 Mya — about 0.8 occurrences64–64 Mya — about 0.8 occurrences64–63 Mya — about 0.4 occurrences72.7 Mya62.9 Mya

7 occurrences of Mesodma ambigua 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

7 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

4 formations

Denver — 39.70°N, 104.70°WDenver — 39.50°N, 104.70°WFerris — 41.94°N, 106.88°WFort Union — 44.30°N, 109.00°WFort Union — 41.66°N, 107.80°WTullock — 47.80°N, 106.10°W

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

Mesodma ambigua and its relatives

Paleocene

Where Mesodma ambigua and its relatives were recorded in the Paleocene.

Found in the same rock

111 taxa

The Paleobiology Database records 7 sites for Mesodma ambigua, 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

6 references

Each of the 7 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 content1

Picture of Mesodma ambigua

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Mesodma ambigua was found in MorphoSource and Sketchfab.

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itMesodma through timeFormations of the PaleoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Jepsen 1940