Redfieldiidae

Redfieldiiformes is an extinct order of ray-finned fish (actinopterygians) which lived from the Early Triassic to Early Jurassic. Redfieldiiforms were fairly typical Triassic fish in overall anatomy. They had a fusiform body shape with thick, ganoine-covered scales. The dorsal and anal fins were large, positioned opposite from each other, and shifted back, close to the tail. The caudal fin was hemiheterocercal, with the vertebral column and body scales extending into an upper lobe equal in size and shape to the lower lobe. They also had several characteristic skeletal traits, such as a hatchet-shaped preopercle, a series of fulcra fringing the fins, a reduced number of branchiostegal rays, and a snout ornamented with tubercles.

Redfieldiidae

Charles Lyell ( On the Geological Age of the Coal-Fields of Eastern Virginia as determined by Fossil Remains ) · 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
RedfieldioideiPBDB
Diet
carnivorePBDB, for Palaeonisciformes
Life habit
nektonicPBDB, for Palaeonisciformes
Motility
actively mobilePBDB, for Palaeonisciformes

Time the record covers

At least 99 million years on record.

The record covers at least 298.9 Mya to 199.5 Mya. No occurrence read is dated outside 303.7 Mya to 192.9 Mya.

Carboniferous — about 2 of 115 occurrencesPermian — about 2 of 115 occurrencesPermianEarly Triassic — about 1 of 115 occurrencesMiddle Triassic — about 3 of 115 occurrencesMiddle TriassicLate Triassic — about 92 of 115 occurrencesLate TriassicEarly Jurassic — about 15 of 115 occurrencesEarly Jurassic306–302 Mya — about 0.7 occurrences302–298 Mya — about 1 occurrence291–287 Mya — about 0.2 occurrences287–283 Mya — about 0.2 occurrences283–279 Mya — about 0.2 occurrences279–275 Mya — about 0.2 occurrences275–271 Mya — about 0.1 occurrences264–260 Mya — about 0.0 occurrences260–256 Mya — about 0.5 occurrences256–252 Mya — about 0.5 occurrences252–248 Mya — about 0.2 occurrences248–244 Mya — about 3 occurrences244–241 Mya — about 0.0 occurrences241–237 Mya — about 1 occurrence237–233 Mya — about 8 occurrences233–229 Mya — about 8 occurrences229–225 Mya — about 10 occurrences225–221 Mya — about 11 occurrences221–218 Mya — about 11 occurrences218–214 Mya — about 11 occurrences214–210 Mya — about 11 occurrences210–206 Mya — about 11 occurrences206–202 Mya — about 8 occurrences202–198 Mya — about 14 occurrences198–195 Mya — about 2 occurrences195–191 Mya — about 0.9 occurrences298.9 Mya199.5 Mya306 Mya191 Mya

115 occurrences of Redfieldiidae on record, most of them in the Late Triassic. 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

115 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

34 formations

Chinle — 34.44°N, 109.46°WChinle — 35.05°N, 109.83°WChinle — 36.33°N, 106.47°WChinle — 34.94°N, 109.77°WChinle — 35.84°N, 111.25°WChinle — 36.09°N, 111.36°WChinle — 35.65°N, 111.12°WChinle — 34.68°N, 109.58°WChinle — 38.17°N, 109.23°WChinle — 38.13°N, 109.18°WChinle — 38.28°N, 108.90°WRedonda — 34.98°N, 103.33°WRedonda — 34.94°N, 103.43°WRedonda — 34.95°N, 103.44°WRedonda — 34.97°N, 103.46°WRedonda — 35.00°N, 103.67°WTecovas — 33.45°N, 101.17°WTecovas — 34.96°N, 101.70°WTecovas — 35.38°N, 102.16°WLockatong — 40.81°N, 74.02°WLockatong — 40.20°N, 75.27°WLockatong — 40.13°N, 75.52°WLockatong — 40.42°N, 75.06°WColorado City — 32.17°N, 101.25°WColorado City — 32.16°N, 100.25°WShuttle Meadow — 41.42°N, 72.72°WShuttle Meadow — 41.40°N, 72.77°WTuckahoe — 37.60°N, 77.72°WTuckahoe — 37.53°N, 77.63°WEast Berlin — 41.34°N, 72.77°WEast Berlin — 41.60°N, 72.71°WEast Berlin — 41.45°N, 72.74°WCumnock — 35.62°N, 79.10°WCumnock — 35.56°N, 79.29°WTimezgadiouine — 31.07°N, 8.93°WTerrigal — 33.43°S, 151.34°EBoonton — 40.90°N, 74.40°WCow Branch — 36.54°N, 79.67°WBull Run — 38.83°N, 77.70°WGanigobis — 25.88°S, 18.00°EVinita — 37.46°N, 77.67°WBluewater Creek — 35.42°N, 108.49°WMcCoy Brook — 45.40°N, 64.22°WSan Pedro Arroyo — 34.58°N, 106.78°WSanta Rosa — 35.24°N, 105.79°WBull Canyon — 34.98°N, 104.15°WSloan Canyon — 36.94°N, 103.15°WLueders — 33.75°N, 99.12°WLithofacies Association II — 35.87°N, 78.90°W

Loading coastlines…

The named rock units Redfieldiidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 further formations hold fewer occurrences each and are not listed. 7 occurrences have no formation on record, which is common for older literature.

Redfieldiidae and its relatives

Late Triassic

Where Redfieldiidae and its relatives were recorded in the Late Triassic.

Found in the same rock

399 taxa

The Paleobiology Database records 71 sites for Redfieldiidae, 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

48 references

Each of the 115 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. 36 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 Redfieldiidae

Credit
Charles Lyell ( On the Geological Age of the Coal-Fields of Eastern Virginia as determined by Fossil Remains )
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Redfieldiidae 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 itRedfieldioidei through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hutchinson 1973