Halecostomi

Halecostomi is the name of a group of neopterygian fish uniting the halecomorphs and the teleosts, the largest group of extant ray-finned fish.

Halecostomi

NOAA · Public Domain · 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
ActinopterygiiPBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At least 244 million years on record.

The record covers at least 247 Mya to 2.58 Mya. No occurrence read is dated outside 251.902 Mya to 11.7 ka.

Permian — about 0 of 22 occurrencesEarly Triassic — about 5 of 22 occurrencesMiddle Triassic — about 0 of 22 occurrencesLate Triassic — about 0 of 22 occurrencesEarly Jurassic — about 0 of 22 occurrencesMiddle Jurassic — about 1 of 22 occurrencesLate Jurassic — about 3 of 22 occurrencesEarly Cretaceous — about 0 of 22 occurrencesLate Cretaceous — about 6 of 22 occurrencesLate CretaceousPaleocene — about 0 of 22 occurrencesEocene — about 1 of 22 occurrencesEoceneOligocene — about 1 of 22 occurrencesMiocene — about 3 of 22 occurrencesPliocene — about 1 of 22 occurrencesPleistocene — about 1 of 22 occurrences257–248 Mya — about 4 occurrences248–240 Mya — about 1 occurrence171–163 Mya — about 1 occurrence163–154 Mya — about 0.2 occurrences154–146 Mya — about 2 occurrences146–137 Mya — about 0.6 occurrences103–94 Mya — about 3 occurrences94–86 Mya — about 0.3 occurrences86–77 Mya — about 1 occurrence77–69 Mya — about 1 occurrence69–60 Mya — about 0.2 occurrences43–34 Mya — about 0.9 occurrences34–26 Mya — about 1 occurrence26–17 Mya — about 2 occurrences17–8.6 Mya — about 0.5 occurrences8.6–0 Mya — about 3 occurrences247 Mya2.58 Mya257 Mya0 Mya

22 occurrences of Halecostomi on record, most of them in the Late Cretaceous. The Paleobiology Database records this as a living group. 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

22 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

Camadas com peixes — 9.33°S, 17.75°ECamadas com peixes — 8.48°S, 20.55°ECamadas com peixes — 8.43°S, 20.51°EMorrison — 39.24°N, 109.00°WMorrison — 39.15°N, 108.77°WPort Orford — 42.83°N, 124.55°WUpper Freshwater Molasse — 48.15°N, 9.88°ESundance — 43.42°N, 103.47°WTacuarembó — 31.73°S, 56.03°WCoachman — 34.33°N, 79.97°WNestucca — 44.62°N, 123.94°WStarigrad Limestone — 43.19°N, 16.65°EAdamantina — 21.59°S, 51.19°WDam — 24.76°N, 50.91°E

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The named rock units Halecostomi has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Halecostomi and its relatives

Late Cretaceous

Where Halecostomi and its relatives were recorded in the Late Cretaceous.

Found in the same rock

235 taxa

The Paleobiology Database records 22 sites for Halecostomi, 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

17 references

Each of the 22 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. 5 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 Halecostomi

Credit
NOAA
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Halecostomi 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 itActinopterygii through timeFormations of the Late CretaceousThe world it lived on

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