Durotrigia

Durotrigia is a genus of extinct lizard from the Early Cretaceous of southern England. The type and only species is Durotrigia triconidens, named in 1967 by R. Hoffstetter for jaw material in a review of the lizard fauna of the Berriasian Lulworth Formation. The genus was found in the Mammal Bed near the base of the formation alongside the other lizards Paramacellodus, Becklesius, Pseudosaurillus, Dorsetisaurus, Saurillus and Parviraptor. Durotrigia is likely a genus within the family Globauridae.

Durotrigia

via GBIF · CC0 · via GBIF. 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
LacertiliaPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Amniota

Time the record covers

At least 27 million years on record.

The record covers at least 168.2 Mya to 141 Mya. No occurrence read is dated outside 168.6 Mya to 139.1 Mya.

Middle Jurassic — about 7 of 10 occurrencesMiddle JurassicLate Jurassic — about 1 of 10 occurrencesLate JurassicEarly Cretaceous — about 2 of 10 occurrencesEarly Cretaceous169–168 Mya — about 7 occurrences158–157 Mya — about 0.3 occurrences157–156 Mya — about 0.3 occurrences156–155 Mya — about 0.3 occurrences155–154 Mya — about 0.0 occurrences144–143 Mya — about 0.1 occurrences143–142 Mya — about 0.3 occurrences142–141 Mya — about 0.5 occurrences141–140 Mya — about 0.8 occurrences140–139 Mya — about 0.3 occurrences168.2 Mya141 Mya169.2 Mya138.5 Mya

10 occurrences of Durotrigia on record, most of them in the Middle Jurassic. 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

10 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

3 formations

Djangura — 43.94°N, 41.50°ELulworth — 50.60°N, 1.97°WSables de Glos — 49.11°N, 0.38°E

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

Durotrigia and its relatives

Middle Jurassic

Where Durotrigia and its relatives were recorded in the Middle Jurassic.

Found in the same rock

97 taxa

The Paleobiology Database records 3 sites for Durotrigia, 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

4 references

Each of the 10 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. 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 Durotrigia

Source
GBIF
Credit
via GBIF
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Durotrigia 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 itLacertilia through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hoffstetter 1967