Chisternon undatum

A picture published with the record for Chisternon undatum. What it shows has not been checked.

Smithsonian Institution · CC0 · via Smithsonian. 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
ChisternonPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Diapsida

Time the record covers

At most 14 million years on record.

Every occurrence read is dated to somewhere between 51.1 Mya and 37.71 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Eocene — about 16 of 16 occurrencesEocene51–51 Mya — about 0.8 occurrences51–50 Mya — about 0.8 occurrences50–50 Mya — about 0.8 occurrences50–49 Mya — about 0.8 occurrences49–49 Mya — about 0.8 occurrences49–48 Mya — about 0.8 occurrences48–48 Mya — about 0.9 occurrences48–47 Mya — about 0.9 occurrences47–47 Mya — about 0.9 occurrences47–46 Mya — about 0.9 occurrences46–46 Mya — about 0.9 occurrences46–45 Mya — about 0.5 occurrences45–45 Mya — about 0.5 occurrences45–44 Mya — about 0.5 occurrences44–44 Mya — about 0.5 occurrences44–43 Mya — about 0.5 occurrences43–43 Mya — about 0.5 occurrences43–42 Mya — about 0.5 occurrences42–42 Mya — about 0.5 occurrences42–42 Mya — about 0.5 occurrences42–41 Mya — about 0.5 occurrences41–41 Mya — about 0.5 occurrences41–40 Mya — about 0.5 occurrences40–40 Mya — about 0.4 occurrences40–39 Mya — about 0.1 occurrences39–39 Mya — about 0.1 occurrences39–38 Mya — about 0.1 occurrences38–38 Mya — about 0.1 occurrences51.6 Mya37.2 Mya

16 occurrences of Chisternon undatum 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

16 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

2 formations

Bridger — 41.32°N, 110.38°WBridger — 41.20°N, 110.50°WBridger — 41.70°N, 109.00°WBridger — 41.04°N, 110.23°WBridger — 41.28°N, 110.03°WUinta — 40.20°N, 109.90°WUinta — 40.08°N, 109.27°W

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The named rock units Chisternon undatum has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Chisternon undatum and its relatives

Eocene

Where Chisternon undatum and its relatives were recorded in the Eocene.

Found in the same rock

187 taxa

The Paleobiology Database records 13 sites for Chisternon undatum, 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

8 references

Each of the 16 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 Chisternon undatum

Source
Smithsonian
Credit
Smithsonian Institution
Licence
CC0 — this site’s default, not the record’s
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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

Keep going

What may have been alongside itChisternon through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Leidy 1871)