Lagerpetidae

Lagerpetidae is a family of basal avemetatarsalians. Though traditionally considered the earliest-diverging dinosauromorphs, fossils described in 2020 suggested that lagerpetids are instead an early branch of pterosauromorphs. Lagerpetid fossils are known from the Triassic of San Juan (Argentina), Arizona, New Mexico, and Texas, Rio Grande do Sul (Brazil), India and Madagascar. Scleromochlus, a minuscule archosaur from Scotland, is sometimes regarded as a lagerpetid or close relative of the family.

Lagerpetidae

M.S. Garcia & R.T. Müller · CC BY 4.0 · 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
PterosauromorphaPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Diapsida

Time the record covers

At least 31 million years on record.

The record covers at least 237 Mya to 205.7 Mya. No occurrence read is dated outside 241.464 Mya to 72.2 Mya.

Middle Triassic — about 3 of 26 occurrencesLate Triassic — about 22 of 26 occurrencesLate TriassicEarly Jurassic — about 0 of 26 occurrencesEarly JurassicMiddle Jurassic — about 0 of 26 occurrencesLate Jurassic — about 0 of 26 occurrencesLate JurassicEarly Cretaceous — about 0 of 26 occurrencesEarly CretaceousLate Cretaceous — about 0 of 26 occurrencesLate Cretaceous245–239 Mya — about 2 occurrences239–233 Mya — about 3 occurrences233–227 Mya — about 3 occurrences227–221 Mya — about 4 occurrences221–216 Mya — about 4 occurrences216–210 Mya — about 4 occurrences210–204 Mya — about 3 occurrences204–198 Mya — about 0.7 occurrences198–192 Mya — about 0.0 occurrences192–186 Mya — about 0.0 occurrences186–180 Mya — about 0.0 occurrences180–174 Mya — about 0.0 occurrences174–169 Mya — about 0.0 occurrences169–163 Mya — about 0.0 occurrences163–157 Mya — about 0.0 occurrences157–151 Mya — about 0.0 occurrences151–145 Mya — about 0.0 occurrences145–139 Mya — about 0.0 occurrences139–133 Mya — about 0.0 occurrences133–127 Mya — about 0.0 occurrences127–122 Mya — about 0.0 occurrences122–116 Mya — about 0.0 occurrences116–110 Mya — about 0.0 occurrences110–104 Mya — about 0.0 occurrences104–98 Mya — about 0.0 occurrences98–92 Mya — about 0.0 occurrences92–86 Mya — about 0.0 occurrences86–81 Mya — about 0.0 occurrences81–75 Mya — about 0.0 occurrences75–69 Mya — about 0.0 occurrences237 Mya205.7 Mya245 Mya69 Mya

26 occurrences of Lagerpetidae 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

26 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

12 formations

Chinle — 36.33°N, 106.47°WChinle — 36.21°N, 106.34°WChinle — 34.44°N, 109.46°WChinle — 35.92°N, 111.45°WChinle — 39.83°N, 106.33°WCooper Canyon — 33.52°N, 101.32°WCooper Canyon — 33.45°N, 101.44°WCooper Canyon — 33.00°N, 101.15°WChañares — 29.82°S, 67.82°WChañares — 29.85°S, 67.78°WSanta Maria — 29.66°S, 53.44°WTecovas — 34.96°N, 101.70°WLossiemouth Sandstone — 57.72°N, 3.29°WColorado City — 32.17°N, 101.25°WCaturrita — 29.56°S, 53.45°WIschigualasto — 30.14°S, 67.88°WQuebrada del Barro — 31.63°S, 67.27°WIsalo II — 22.92°S, 44.55°ESanto Domingo — 28.50°S, 68.75°W

Loading coastlines…

The named rock units Lagerpetidae has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Lagerpetidae and its relatives

Late Triassic

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

Found in the same rock

208 taxa

The Paleobiology Database records 22 sites for Lagerpetidae, 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

19 references

Each of the 26 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. 7 further references are not listed. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content2

Picture of Lagerpetidae

Credit
M.S. Garcia & R.T. Müller
Licence
CC BY 4.0
Commercial use
the licence allows it

CT scan

Licence
No Copyright (US)
Commercial use
cannot be read from the licence given — check the record
Specimen
Lagerpetidae indet. · pefo:44476

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 itPterosauromorpha through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Arcucci 1986)