Amphibia

Amphibians are ectothermic, anamniotic, four-limbed vertebrate animals that constitute the class Amphibia. In its broadest sense, it is a paraphyletic group encompassing all tetrapods, but excluding the amniotes. All extant (living) amphibians belong to the monophyletic subclass Lissamphibia, with three living orders: Anura, Urodela (salamanders), and Gymnophiona (caecilians). Evolved to be mostly semiaquatic, amphibians have adapted to inhabit a wide variety of habitats, with most species living in freshwater, wetland or terrestrial ecosystems. Their life cycle typically starts out as aquatic larvae with gills known as tadpoles, but some species have developed behavioural adaptations to bypass this.

Amphibia

User:Froggydarb · CC BY-SA 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
TetrapodaPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
brackish,freshwater,terrestrialPBDB, for Tetrapoda

Time the record covers

At least 330 million years on record.

The record covers at least 330.3 Mya to 11.7 ka. No occurrence read is dated outside 358.86 Mya to 0 Mya.

Devonian — about 0 of 6317 occurrencesCarboniferous — about 157 of 6317 occurrencesCarboniferousPermian — about 607 of 6317 occurrencesPermianEarly Triassic — about 491 of 6317 occurrencesMiddle Triassic — about 206 of 6317 occurrencesLate Triassic — about 391 of 6317 occurrencesLate TriassicEarly Jurassic — about 31 of 6317 occurrencesMiddle Jurassic — about 77 of 6317 occurrencesLate Jurassic — about 72 of 6317 occurrencesEarly Cretaceous — about 216 of 6317 occurrencesEarly CretaceousLate Cretaceous — about 1205 of 6317 occurrencesLate CretaceousPaleocene — about 148 of 6317 occurrencesEocene — about 185 of 6317 occurrencesOligocene — about 127 of 6317 occurrencesMiocene — about 751 of 6317 occurrencesPliocene — about 291 of 6317 occurrencesPleistocene — about 1262 of 6317 occurrences366–354 Mya — about 0.8 occurrences354–342 Mya — about 2 occurrences342–329 Mya — about 6 occurrences329–317 Mya — about 18 occurrences317–305 Mya — about 72 occurrences305–293 Mya — about 222 occurrences293–281 Mya — about 211 occurrences281–268 Mya — about 96 occurrences268–256 Mya — about 116 occurrences256–244 Mya — about 591 occurrences244–232 Mya — about 177 occurrences232–220 Mya — about 138 occurrences220–207 Mya — about 152 occurrences207–195 Mya — about 63 occurrences195–183 Mya — about 12 occurrences183–171 Mya — about 7 occurrences171–159 Mya — about 80 occurrences159–146 Mya — about 45 occurrences146–134 Mya — about 63 occurrences134–122 Mya — about 60 occurrences122–110 Mya — about 90 occurrences110–98 Mya — about 51 occurrences98–85 Mya — about 112 occurrences85–73 Mya — about 482 occurrences73–61 Mya — about 663 occurrences61–49 Mya — about 128 occurrences49–37 Mya — about 90 occurrences37–24 Mya — about 141 occurrences24–12 Mya — about 416 occurrences12–0 Mya — about 2011 occurrences330.3 Mya11.7 ka366 Mya0 Mya

6,317 occurrences of Amphibia on record, most of them in the Pleistocene. 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

6,317 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

724 formations

Hell Creek — 47.80°N, 106.10°WHell Creek — 47.68°N, 106.43°WHell Creek — 45.95°N, 103.96°WHell Creek — 46.10°N, 103.30°WHell Creek — 45.98°N, 103.75°WHell Creek — 46.14°N, 103.80°WHell Creek — 46.41°N, 103.94°WHell Creek — 46.38°N, 103.96°WHell Creek — 46.21°N, 103.77°WHell Creek — 46.46°N, 104.02°WHell Creek — 46.33°N, 103.90°WHell Creek — 47.55°N, 107.13°WHell Creek — 47.62°N, 107.32°WHell Creek — 47.52°N, 106.98°WHell Creek — 47.57°N, 107.10°WHell Creek — 47.52°N, 106.40°WHell Creek — 47.58°N, 106.30°WHell Creek — 47.55°N, 107.25°WHell Creek — 47.60°N, 106.43°WHell Creek — 47.52°N, 107.18°WHell Creek — 47.53°N, 106.92°WHell Creek — 47.07°N, 106.92°WHell Creek — 47.60°N, 107.23°WHell Creek — 46.90°N, 101.50°WHell Creek — 47.61°N, 106.90°WHell Creek — 47.60°N, 107.00°WHell Creek — 46.41°N, 103.50°WHell Creek — 47.27°N, 107.13°WHell Creek — 45.66°N, 105.08°WHell Creek — 47.47°N, 107.37°WHell Creek — 45.05°N, 101.97°WHell Creek — 45.50°N, 103.10°WHell Creek — 45.64°N, 103.49°WHell Creek — 45.95°N, 104.92°WHell Creek — 45.00°N, 103.19°WDinosaur Park — 50.73°N, 111.52°WDinosaur Park — 50.75°N, 111.40°WDinosaur Park — 49.12°N, 110.47°WDinosaur Park — 50.75°N, 111.48°WDinosaur Park — 50.79°N, 111.62°WDinosaur Park — 50.78°N, 111.33°WDinosaur Park — 49.10°N, 110.94°WDinosaur Park — 49.96°N, 110.27°WDinosaur Park — 50.56°N, 111.46°WDinosaur Park — 50.68°N, 108.09°WChinle — 34.51°N, 109.36°WChinle — 34.44°N, 109.46°WChinle — 35.05°N, 109.83°WChinle — 35.84°N, 111.25°WChinle — 34.94°N, 109.77°WChinle — 35.09°N, 109.79°WChinle — 35.12°N, 110.55°WChinle — 36.33°N, 106.47°WChinle — 35.47°N, 108.56°WChinle — 35.41°N, 108.47°WChinle — 36.09°N, 111.36°WChinle — 34.83°N, 109.81°WChinle — 36.40°N, 106.50°WChinle — 35.38°N, 109.37°WChinle — 34.68°N, 109.58°WChinle — 34.53°N, 109.32°WChinle — 35.02°N, 109.89°WChinle — 34.92°N, 109.91°WChinle — 34.82°N, 109.90°WChinle — 34.94°N, 109.74°WChinle — 35.33°N, 109.17°WChinle — 35.63°N, 109.10°WChinle — 36.00°N, 109.45°WChinle — 36.42°N, 109.33°WChinle — 36.40°N, 109.20°WChinle — 36.35°N, 109.47°WChinle — 36.45°N, 109.57°WChinle — 34.73°N, 109.67°WChinle — 34.83°N, 109.50°WChinle — 34.40°N, 109.60°WChinle — 36.50°N, 109.42°WChinle — 35.88°N, 111.28°WChinle — 35.84°N, 111.30°WChinle — 36.58°N, 106.83°WChinle — 35.87°N, 111.37°WChinle — 34.90°N, 107.73°WChinle — 35.56°N, 106.82°WChinle — 39.83°N, 106.33°WChinle — 39.83°N, 106.90°WChinle — 37.27°N, 109.68°WAlamosa — 37.37°N, 105.75°WLance — 43.30°N, 104.37°WLance — 43.12°N, 104.64°WLance — 41.57°N, 108.67°WLance — 42.58°N, 105.39°WLance — 43.18°N, 104.53°WLance — 43.15°N, 104.57°WLance — 43.13°N, 104.49°WLance — 43.25°N, 104.52°WLance — 43.80°N, 104.62°WLance — 43.25°N, 104.65°WLance — 43.00°N, 104.50°WOldman — 50.75°N, 111.51°WOldman — 49.10°N, 110.94°WOldman — 49.08°N, 110.84°WOldman — 49.08°N, 110.68°WOldman — 49.16°N, 110.72°WOldman — 50.83°N, 111.32°WStaritskaya — 51.56°N, 56.05°EStaritskaya — 51.63°N, 56.03°EStaritskaya — 51.80°N, 55.68°EStaritskaya — 51.32°N, 54.82°EStaritskaya — 51.61°N, 53.90°EStaritskaya — 51.87°N, 53.98°EStaritskaya — 52.21°N, 53.30°EStaritskaya — 52.21°N, 53.08°EStaritskaya — 52.30°N, 53.08°EStaritskaya — 52.32°N, 52.96°EStaritskaya — 52.39°N, 52.95°EStaritskaya — 52.37°N, 52.69°EStaritskaya — 52.40°N, 52.46°EStaritskaya — 52.38°N, 52.45°EStaritskaya — 52.54°N, 52.36°EStaritskaya — 52.83°N, 52.35°EStaritskaya — 52.23°N, 52.02°EStaritskaya — 52.35°N, 52.12°EStaritskaya — 52.49°N, 52.22°EStaritskaya — 52.50°N, 51.93°EStaritskaya — 52.72°N, 52.06°EStaritskaya — 52.81°N, 52.18°EStaritskaya — 52.86°N, 52.08°EStaritskaya — 52.86°N, 51.73°EStaritskaya — 52.81°N, 51.76°EStaritskaya — 52.81°N, 51.73°EStaritskaya — 52.50°N, 51.07°EStaritskaya — 52.51°N, 50.87°EFort Union — 45.20°N, 109.00°WFort Union — 45.80°N, 109.80°WFort Union — 44.91°N, 108.93°WFort Union — 44.72°N, 108.62°WFort Union — 44.72°N, 108.38°WFort Union — 44.05°N, 109.00°WFort Union — 43.85°N, 108.35°WFort Union — 46.05°N, 104.48°WFort Union — 44.30°N, 109.00°WFort Union — 44.88°N, 109.12°WFort Union — 46.90°N, 101.50°WFort Union — 46.91°N, 101.44°WFort Union — 45.40°N, 105.60°WFort Union — 44.91°N, 109.02°WFort Union — 41.92°N, 108.56°WFort Union — 47.60°N, 107.00°WFort Union — 46.33°N, 104.01°WFort Union — 46.43°N, 103.93°WFort Union — 41.30°N, 107.74°WBissekty — 42.12°N, 62.66°EBissekty — 40.70°N, 72.60°EMeisenheim — 49.75°N, 7.70°EMeisenheim — 49.59°N, 7.47°EMeisenheim — 49.73°N, 7.77°EMeisenheim — 49.71°N, 7.60°EMeisenheim — 49.58°N, 7.70°EMeisenheim — 49.57°N, 7.44°EMeisenheim — 49.78°N, 7.77°EMeisenheim — 49.73°N, 7.69°EMeisenheim — 49.59°N, 7.76°EMeisenheim — 49.41°N, 7.78°EMeisenheim — 49.83°N, 7.57°EMeisenheim — 49.52°N, 7.33°EMeisenheim — 49.41°N, 6.91°EMeisenheim — 49.44°N, 7.75°EMeisenheim — 49.50°N, 7.39°EKzylsaiskaya — 52.35°N, 52.66°EKzylsaiskaya — 52.31°N, 53.11°EKzylsaiskaya — 52.71°N, 51.34°EKzylsaiskaya — 52.43°N, 55.76°EKzylsaiskaya — 51.63°N, 56.03°EKzylsaiskaya — 51.28°N, 55.89°EKzylsaiskaya — 51.26°N, 54.43°EKzylsaiskaya — 51.59°N, 53.86°EKzylsaiskaya — 51.61°N, 53.80°EKzylsaiskaya — 52.22°N, 53.33°EKzylsaiskaya — 52.20°N, 53.23°EKzylsaiskaya — 52.08°N, 53.00°EKzylsaiskaya — 52.36°N, 52.71°EKzylsaiskaya — 52.36°N, 52.41°EKzylsaiskaya — 52.35°N, 52.33°EKzylsaiskaya — 52.24°N, 52.22°EKzylsaiskaya — 52.62°N, 52.01°EKzylsaiskaya — 52.76°N, 51.64°EKzylsaiskaya — 52.50°N, 51.32°EUpper Freshwater Molasse — 47.67°N, 8.93°EUpper Freshwater Molasse — 48.44°N, 11.04°EUpper Freshwater Molasse — 48.66°N, 10.23°EUpper Freshwater Molasse — 48.63°N, 11.80°EUpper Freshwater Molasse — 48.09°N, 10.03°EUpper Freshwater Molasse — 48.17°N, 10.10°EArroyo — 33.81°N, 99.20°WArroyo — 33.76°N, 99.14°WArroyo — 33.70°N, 99.27°WArroyo — 33.59°N, 99.26°WArroyo — 33.73°N, 99.36°WArroyo — 33.97°N, 99.20°WValentine — 42.78°N, 100.03°WValentine — 42.80°N, 100.80°WValentine — 42.79°N, 100.07°WValentine — 42.49°N, 98.11°WErfurt — 49.08°N, 9.89°EErfurt — 49.07°N, 9.76°EErfurt — 49.00°N, 9.77°EErfurt — 49.18°N, 9.78°EErfurt — 50.83°N, 10.93°EErfurt — 49.21°N, 9.68°EErfurt — 48.92°N, 9.08°EErfurt — 48.90°N, 9.20°EErfurt — 48.92°N, 8.95°EErfurt — 49.18°N, 9.87°EErfurt — 50.90°N, 10.95°EErfurt — 50.38°N, 10.65°EErfurt — 49.39°N, 8.05°EKaiparowits — 37.80°N, 111.50°WKaiparowits — 37.40°N, 111.20°WKaiparowits — 37.42°N, 111.77°WKaiparowits — 37.20°N, 112.88°WSpilia — 41.15°N, 23.48°EKongressfjellet — 78.25°N, 16.90°EKongressfjellet — 78.46°N, 15.47°EKongressfjellet — 78.24°N, 17.21°EKongressfjellet — 78.28°N, 17.63°EKongressfjellet — 78.27°N, 16.97°EKongressfjellet — 78.50°N, 16.83°EKongressfjellet — 78.62°N, 14.43°EKongressfjellet — 78.25°N, 17.84°EKongressfjellet — 78.57°N, 15.32°EKongressfjellet — 78.58°N, 15.38°EKongressfjellet — 78.25°N, 18.06°EKopanskaya — 52.16°N, 55.91°EKopanskaya — 51.71°N, 55.79°EKopanskaya — 51.40°N, 54.66°EKopanskaya — 51.85°N, 54.18°EKopanskaya — 52.30°N, 53.08°EKopanskaya — 52.32°N, 52.96°EKopanskaya — 52.39°N, 52.95°EKopanskaya — 52.37°N, 52.69°EKopanskaya — 52.44°N, 52.46°EKopanskaya — 52.79°N, 52.44°EKopanskaya — 52.80°N, 52.33°EKopanskaya — 52.63°N, 52.01°EKopanskaya — 52.67°N, 52.19°EKopanskaya — 52.71°N, 52.07°EKopanskaya — 52.81°N, 52.18°EKopanskaya — 52.86°N, 52.10°EKopanskaya — 52.85°N, 50.43°EKopanskaya — 52.45°N, 50.48°EMaevarano — 15.91°S, 46.58°EMaevarano — 16.12°S, 45.74°EMaevarano — 15.98°S, 46.05°EMaevarano — 16.13°S, 45.63°Efacies à Congeria — 45.05°N, 7.93°EIron Springs — 37.57°N, 113.43°WIron Springs — 37.80°N, 112.81°WIron Springs — 37.90°N, 112.74°WIron Springs — 37.30°N, 113.40°WIron Springs — 37.37°N, 113.35°WMorrison — 41.89°N, 106.00°WMorrison — 38.58°N, 108.40°WMorrison — 38.54°N, 105.19°WMorrison — 44.46°N, 104.73°WMorrison — 40.47°N, 109.18°WMorrison — 41.98°N, 106.15°WMorrison — 39.24°N, 109.00°WMorrison — 37.63°N, 109.57°WMorrison — 40.30°N, 108.57°WStraight Cliffs — 37.80°N, 111.50°WStraight Cliffs — 37.64°N, 112.06°WStraight Cliffs — 37.60°N, 111.97°WStraight Cliffs — 37.62°N, 112.16°WStraight Cliffs — 37.60°N, 111.95°WStraight Cliffs — 35.57°N, 112.86°W

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The named rock units Amphibia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 700 further formations hold fewer occurrences each and are not listed. 2,019 occurrences have no formation on record, which is common for older literature.

Amphibia and its relatives

Pleistocene

Where Amphibia and its relatives were recorded in the Pleistocene.

Found in the same rock

2,897 taxa

The Paleobiology Database records at least 982 sites for Amphibia, and this reads 240 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

1,652 references

Each of the 6,317 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. 1,640 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 content2

Picture of Amphibia

Credit
User:Froggydarb
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

Photogrammetry

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
amphibia indet. · MST:PALEO:MST-SP-13005

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

Everything alive alongside itTetrapoda through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Linnaeus 1758)