Acipenseriformes

Acipenseriformes is an order of basal ray-finned fishes that includes living and fossil sturgeons and paddlefishes (Acipenseroidei), as well as the extinct families Chondrosteidae and Peipiaosteidae. They are the second earliest diverging group of living ray-finned fish after the bichirs. Despite being early diverging, they are highly derived, having only weakly ossified skeletons that are mostly made of cartilage, and in modern representatives highly modified skulls.

Acipenseriformes

The original uploader was Atsme at English Wikipedia . · CC BY 3.0 · 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
ChondrosteiPBDB
Diet
carnivorePBDB
Life habit
nektobenthicPBDB
Motility
actively mobilePBDB

Time the record covers

At least 251 million years on record.

The record covers at least 251.902 Mya to 11.7 ka. No occurrence read is dated outside 259.857 Mya to 0 Mya.

Permian — about 1 of 227 occurrencesEarly Triassic — about 6 of 227 occurrencesMiddle Triassic — about 0 of 227 occurrencesLate Triassic — about 0 of 227 occurrencesEarly Jurassic — about 14 of 227 occurrencesEarly JurassicMiddle Jurassic — about 1 of 227 occurrencesLate Jurassic — about 0 of 227 occurrencesEarly Cretaceous — about 14 of 227 occurrencesEarly CretaceousLate Cretaceous — about 131 of 227 occurrencesLate CretaceousPaleocene — about 12 of 227 occurrencesEocene — about 13 of 227 occurrencesEoceneOligocene — about 1 of 227 occurrencesMiocene — about 18 of 227 occurrencesPliocene — about 3 of 227 occurrencesPleistocene — about 8 of 227 occurrences265–256 Mya — about 0.5 occurrences256–247 Mya — about 6 occurrences247–239 Mya — about 0.2 occurrences203–194 Mya — about 6 occurrences194–186 Mya — about 2 occurrences186–177 Mya — about 5 occurrences177–168 Mya — about 1 occurrence168–159 Mya — about 0.9 occurrences141–133 Mya — about 1 occurrence133–124 Mya — about 4 occurrences124–115 Mya — about 9 occurrences115–106 Mya — about 0.6 occurrences106–97 Mya — about 1 occurrence97–88 Mya — about 4 occurrences88–80 Mya — about 30 occurrences80–71 Mya — about 62 occurrences71–62 Mya — about 44 occurrences62–53 Mya — about 6 occurrences53–44 Mya — about 7 occurrences44–35 Mya — about 2 occurrences35–27 Mya — about 0.2 occurrences27–18 Mya — about 0.8 occurrences18–8.8 Mya — about 13 occurrences8.8–0 Mya — about 21 occurrences251.902 Mya11.7 ka265 Mya0 Mya

227 occurrences of Acipenseriformes 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

227 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

62 formations

Dinosaur Park — 50.81°N, 111.32°WDinosaur Park — 49.12°N, 110.47°WDinosaur Park — 50.82°N, 111.57°WDinosaur Park — 50.74°N, 111.49°WDinosaur Park — 50.77°N, 111.51°WDinosaur Park — 50.75°N, 111.40°WDinosaur Park — 50.68°N, 108.09°WHell Creek — 47.80°N, 106.10°WHell Creek — 46.03°N, 103.77°WHell Creek — 46.21°N, 103.77°WHell Creek — 45.95°N, 103.96°WHell Creek — 46.10°N, 103.30°WHell Creek — 46.33°N, 103.90°WHell Creek — 45.94°N, 103.95°WHell Creek — 47.55°N, 107.13°WHell Creek — 47.62°N, 107.32°WHell Creek — 47.52°N, 106.42°WHell Creek — 47.07°N, 106.92°WHell Creek — 47.60°N, 107.23°WHell Creek — 47.75°N, 106.20°WHell Creek — 47.61°N, 106.90°WHell Creek — 45.50°N, 103.10°WHell Creek — 45.00°N, 103.19°WHell Creek — 46.19°N, 103.40°WLance — 43.30°N, 104.37°WLance — 43.12°N, 104.64°WLance — 41.57°N, 108.67°WLance — 41.58°N, 108.65°WLance — 43.15°N, 104.57°WLance — 43.17°N, 104.53°WLance — 43.13°N, 104.49°WYixian — 41.60°N, 120.87°EYixian — 41.20°N, 119.23°EYixian — 40.00°N, 116.67°EYixian — 41.17°N, 119.40°EYixian — 41.42°N, 118.97°EPrince Creek — 70.02°N, 151.59°WPrince Creek — 70.09°N, 151.54°WFort Union — 46.05°N, 104.48°WFort Union — 46.90°N, 101.50°WFort Union — 47.60°N, 107.00°WOldman — 49.08°N, 110.84°WOldman — 50.76°N, 111.53°WCalvert — 38.67°N, 76.53°WCalvert — 38.17°N, 76.87°WCalvert — 37.93°N, 77.51°WCalvert — 38.16°N, 76.83°WLondon Clay — 51.85°N, 1.27°ELondon Clay — 51.40°N, 0.83°EJudith River — 46.47°N, 109.30°WJudith River — 46.46°N, 109.41°WJudith River — 46.10°N, 109.10°WJudith River — 48.56°N, 107.78°WHorseshoe Canyon — 52.00°N, 112.88°WHorseshoe Canyon — 53.56°N, 113.43°WHorseshoe Canyon — 51.67°N, 112.91°WFruitland — 36.49°N, 108.49°WForemost — 50.07°N, 111.14°WForemost — 49.13°N, 110.87°WElmore — 50.80°N, 1.20°WSelsey — 50.80°N, 1.21°WTullock — 47.80°N, 106.10°WTullock — 47.60°N, 107.00°WBissekty — 42.12°N, 62.66°EKhodzhakul — 40.10°N, 65.80°ECromer Forest Bed — 52.88°N, 1.44°EMooreville Chalk — 32.76°N, 88.02°WMooreville Chalk — 32.96°N, 88.13°WWhitemud — 49.61°N, 105.75°WWhitemud — 49.62°N, 105.78°WHuajiying — 40.37°N, 116.36°EDaye — 26.51°N, 106.87°EDaye — 26.61°N, 107.26°ECapistrano — 33.63°N, 117.65°WCapistrano — 33.56°N, 117.71°W

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The named rock units Acipenseriformes has been recovered from, largest first. Drawn where the rock is now, not where it formed. 38 further formations hold fewer occurrences each and are not listed. 31 occurrences have no formation on record, which is common for older literature.

Acipenseriformes and its relatives

Late Cretaceous

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

Found in the same rock

3,065 taxa

The Paleobiology Database records 190 sites for Acipenseriformes, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

107 references

Each of the 227 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. 95 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 Acipenseriformes

Credit
The original uploader was Atsme at English Wikipedia .
Licence
CC BY 3.0
Commercial use
the licence allows it

No 3D scan of Acipenseriformes 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 itChondrostei through timeFormations of the Late CretaceousThe world it lived on

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