Lepidosauromorpha

Lepidosauromorpha is a group of reptiles comprising all diapsids closer to lizards than to archosaurs. The only living sub-group is the Lepidosauria, which contains two subdivisions, Squamata, which contains lizards and snakes, and Rhynchocephalia, the only extant species of which is the tuatara.

Lepidosauromorpha

Neil Pezzoni · 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
SauriaPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Amniota

Time the record covers

At least 250 million years on record.

The record covers at least 250.8 Mya to 11.7 ka. No occurrence read is dated outside 251.902 Mya to 0 Mya.

Permian — about 0 of 439 occurrencesEarly Triassic — about 11 of 439 occurrencesMiddle Triassic — about 17 of 439 occurrencesLate Triassic — about 161 of 439 occurrencesLate TriassicEarly Jurassic — about 51 of 439 occurrencesEarly JurassicMiddle Jurassic — about 23 of 439 occurrencesLate Jurassic — about 90 of 439 occurrencesEarly Cretaceous — about 36 of 439 occurrencesEarly CretaceousLate Cretaceous — about 28 of 439 occurrencesLate CretaceousPaleocene — about 3 of 439 occurrencesEocene — about 2 of 439 occurrencesEoceneOligocene — about 0 of 439 occurrencesMiocene — about 2 of 439 occurrencesPliocene — about 1 of 439 occurrencesPleistocene — about 3 of 439 occurrences257–248 Mya — about 9 occurrences248–240 Mya — about 11 occurrences240–231 Mya — about 55 occurrences231–223 Mya — about 43 occurrences223–214 Mya — about 21 occurrences214–206 Mya — about 24 occurrences206–197 Mya — about 44 occurrences197–188 Mya — about 18 occurrences188–180 Mya — about 14 occurrences180–171 Mya — about 4 occurrences171–163 Mya — about 22 occurrences163–154 Mya — about 3 occurrences154–146 Mya — about 70 occurrences146–137 Mya — about 27 occurrences137–128 Mya — about 2 occurrences128–120 Mya — about 2 occurrences120–111 Mya — about 9 occurrences111–103 Mya — about 11 occurrences103–94 Mya — about 2 occurrences94–86 Mya — about 0.0 occurrences86–77 Mya — about 0.6 occurrences77–69 Mya — about 16 occurrences69–60 Mya — about 12 occurrences60–51 Mya — about 2 occurrences43–34 Mya — about 2 occurrences34–26 Mya — about 0.2 occurrences26–17 Mya — about 1 occurrence17–8.6 Mya — about 0.9 occurrences8.6–0 Mya — about 15 occurrences250.8 Mya11.7 ka257 Mya0 Mya

439 occurrences of Lepidosauromorpha on record, most of them in the Late Triassic. 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

439 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

94 formations

Morrison — 40.42°N, 109.21°WMorrison — 41.89°N, 106.00°WMorrison — 39.24°N, 109.00°WMorrison — 38.58°N, 108.40°WMorrison — 38.73°N, 111.27°WMorrison — 38.54°N, 105.19°WMorrison — 40.44°N, 109.32°WMorrison — 38.81°N, 108.32°WMorrison — 38.32°N, 108.83°WMorrison — 39.17°N, 108.77°WMorrison — 44.49°N, 107.88°WMorrison — 40.47°N, 109.18°WMorrison — 41.88°N, 106.11°WMorrison — 41.98°N, 106.15°WMorrison — 39.15°N, 108.77°WMorrison — 44.46°N, 104.73°WMorrison — 39.01°N, 111.02°WMorrison — 40.30°N, 108.57°WHell Creek — 45.95°N, 103.96°WHell Creek — 46.10°N, 103.30°WHell Creek — 45.98°N, 103.75°WHell Creek — 46.38°N, 103.96°WHell Creek — 46.33°N, 103.90°WHell Creek — 46.36°N, 103.90°WHell Creek — 45.94°N, 103.95°WHell Creek — 47.61°N, 106.90°WLa Boca — 26.60°N, 99.52°WChinle — 34.44°N, 109.46°WChinle — 36.33°N, 106.47°WChinle — 35.84°N, 111.25°WChinle — 35.65°N, 111.12°WChinle — 35.05°N, 109.84°WChinle — 34.68°N, 109.58°WChinle — 35.03°N, 109.83°WChinle — 34.95°N, 109.76°WForest Marble — 51.87°N, 1.27°WForest Marble — 50.71°N, 2.78°WForest Marble — 50.68°N, 2.66°WForest Marble — 51.73°N, 1.98°WForest Marble — 51.51°N, 2.16°WTecovas — 33.43°N, 101.16°WTecovas — 35.38°N, 102.16°WSolnhofen — 48.92°N, 11.12°ESolnhofen — 48.90°N, 11.19°ESolnhofen — 48.93°N, 11.98°ESolnhofen — 48.88°N, 10.95°EKlettgau — 47.50°N, 8.02°EKlettgau — 47.71°N, 8.45°EKlettgau — 47.71°N, 8.45°EErfurt — 49.21°N, 9.68°EErfurt — 49.08°N, 9.89°EMagnesian Conglomerate — 51.47°N, 2.62°WMcCoy Brook — 45.40°N, 64.22°WFleming Fjord — 71.48°N, 22.68°WFleming Fjord — 71.37°N, 22.56°WLulworth — 50.60°N, 1.97°WVinita — 37.46°N, 77.67°WCaturrita — 29.56°S, 53.45°WCaturrita — 29.69°S, 52.85°WCandeleros — 39.62°S, 69.35°WCandeleros — 39.71°S, 68.60°WCandeleros — 39.63°S, 68.70°WMörnsheim — 48.86°N, 10.99°EMörnsheim — 48.79°N, 10.90°EKota — 19.27°N, 79.52°EKsar Metlili — 32.70°N, 3.22°WLos Alamitos — 41.95°S, 66.33°WTorleite — 49.11°N, 11.90°ETorleite — 48.91°N, 11.14°EIsalo IIIb — 16.55°S, 46.98°ETlayúa — 18.59°N, 97.90°WKayenta — 35.76°N, 111.08°WKayenta — 35.88°N, 111.41°W

Loading coastlines…

The named rock units Lepidosauromorpha has been recovered from, largest first. Drawn where the rock is now, not where it formed. 70 further formations hold fewer occurrences each and are not listed. 134 occurrences have no formation on record, which is common for older literature.

Lepidosauromorpha and its relatives

Late Triassic

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

Found in the same rock

1,870 taxa

The Paleobiology Database records 285 sites for Lepidosauromorpha, 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

221 references

Each of the 439 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. 209 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 Lepidosauromorpha

Credit
Neil Pezzoni
Licence
CC BY 3.0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Lepidosauromorpha species A · nms:g:2019.34.9

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 itSauria through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Benton 1983)