Percopsiformes

The Percopsiformes are a small order of freshwater teleost fishes measuring less than 20 cm (7.9 in) in length, comprising the trout-perch and its allies. It contains just ten extant species, grouped into seven genera and three families. Five of these genera are monotypic.

Percopsiformes

U.S. Fish and Wildlife Service · Public Domain · via Wikidata/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
ParacanthopterygiiPBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At least 17 million years on record.

The record covers at least 66 Mya to 48.07 Mya. No occurrence read is dated outside 72.2 Mya to 41.03 Mya.

Late Cretaceous — about 5 of 19 occurrencesLate CretaceousPaleocene — about 6 of 19 occurrencesPaleoceneEocene — about 8 of 19 occurrencesEocene73–72 Mya — about 0.4 occurrences72–71 Mya — about 0.9 occurrences71–70 Mya — about 0.9 occurrences70–69 Mya — about 0.9 occurrences69–67 Mya — about 0.9 occurrences67–66 Mya — about 0.9 occurrences66–65 Mya — about 0.5 occurrences65–64 Mya — about 0.4 occurrences64–63 Mya — about 0.4 occurrences63–62 Mya — about 0.4 occurrences62–61 Mya — about 0.8 occurrences61–60 Mya — about 1 occurrence60–59 Mya — about 1 occurrence59–58 Mya — about 0.8 occurrences58–57 Mya — about 0.5 occurrences57–56 Mya — about 0.7 occurrences56–54 Mya — about 0.9 occurrences54–53 Mya — about 0.9 occurrences53–52 Mya — about 0.9 occurrences52–51 Mya — about 0.9 occurrences51–50 Mya — about 0.5 occurrences50–49 Mya — about 0.5 occurrences49–48 Mya — about 0.5 occurrences48–47 Mya — about 0.5 occurrences47–46 Mya — about 0.5 occurrences46–45 Mya — about 0.3 occurrences45–44 Mya — about 0.3 occurrences44–43 Mya — about 0.3 occurrences43–41 Mya — about 0.3 occurrences41–40 Mya — about 0.1 occurrences66 Mya48.07 Mya72.8 Mya40.4 Mya

19 occurrences of Percopsiformes on record, most of them in the Eocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

19 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

11 formations

Hell Creek — 47.60°N, 106.92°WHell Creek — 47.52°N, 106.40°WHell Creek — 47.27°N, 107.13°WPaskapoo — 52.27°N, 113.59°WPaskapoo — 54.33°N, 118.75°WGreen River — 41.87°N, 110.68°WGreen River — 42.13°N, 110.13°WAllenby — 49.48°N, 120.73°WAllenby — 49.37°N, 120.59°WLellinge Greensand — 55.71°N, 12.60°EScollard — 51.95°N, 112.94°WWasatch — 41.53°N, 108.56°WClaron — 37.82°N, 111.95°WAgatdal — 70.58°N, 53.10°WLance — 43.15°N, 104.57°WKlondike Mountain — 48.88°N, 118.87°W

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The named rock units Percopsiformes 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.

Percopsiformes and its relatives

Eocene

Where Percopsiformes and its relatives were recorded in the Eocene.

Found in the same rock

437 taxa

The Paleobiology Database records 19 sites for Percopsiformes, 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

14 references

Each of the 19 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. 2 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 content1

Picture of Percopsiformes

Credit
U.S. Fish and Wildlife Service
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Percopsiformes 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.

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 itParacanthopterygii through timeFormations of the EoceneThe world it lived on

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