Dvinosaurus

Dvinosaurus is an extinct genus of amphibious temnospondyls localized to regions of western and central Russia during the middle and late Permian, approximately 265-254 million years ago. Its discovery was first noted in 1921 by Russian paleontologist Vladimir Prokhorovich Amalitskii in a posthumously published paper that documents the findings of a site in Russia's Arkhangelsk District. Its name is derived from the proximity of this site to the Northern Dvina River.

Dvinosaurus

Dmitry Bogdanov · 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
DvinosauridaePBDB
Diet
carnivorePBDB, for Temnospondyli
Life habit
amphibiousPBDB, for Temnospondyli
Motility
actively mobilePBDB, for Temnospondyli
Environment
brackish,freshwater,terrestrialPBDB, for Tetrapoda

Time the record covers

At least 4.4 million years on record.

The record covers at least 264.28 Mya to 259.857 Mya. No occurrence read is dated outside 266.9 Mya to 254.14 Mya.

Permian — about 26 of 26 occurrencesPermian267–266 Mya — about 0.2 occurrences266–266 Mya — about 0.2 occurrences266–266 Mya — about 0.2 occurrences266–265 Mya — about 0.2 occurrences265–265 Mya — about 0.2 occurrences265–264 Mya — about 0.4 occurrences264–264 Mya — about 1 occurrence264–263 Mya — about 1 occurrence263–263 Mya — about 1 occurrence263–262 Mya — about 1 occurrence262–262 Mya — about 1 occurrence262–261 Mya — about 1 occurrence261–261 Mya — about 1 occurrence261–261 Mya — about 1 occurrence261–260 Mya — about 1 occurrence260–260 Mya — about 2 occurrences260–259 Mya — about 2 occurrences259–259 Mya — about 2 occurrences259–258 Mya — about 2 occurrences258–258 Mya — about 2 occurrences258–257 Mya — about 2 occurrences257–257 Mya — about 2 occurrences257–256 Mya — about 0.3 occurrences256–256 Mya — about 0.1 occurrences256–255 Mya — about 0.1 occurrences255–255 Mya — about 0.1 occurrences255–255 Mya — about 0.1 occurrences255–254 Mya — about 0.1 occurrences264.28 Mya259.857 Mya267.4 Mya253.6 Mya

26 occurrences of Dvinosaurus on record, most of them in the Permian. 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

8 formations

Salarevo — 61.19°N, 46.63°EPoldarsa — 60.58°N, 45.43°EPoldarsa — 60.59°N, 45.53°EPoldarsa — 60.61°N, 45.62°EMalokinelskaya — 53.47°N, 52.14°EMalokinelskaya — 52.16°N, 55.23°EUrpalov — 58.15°N, 48.35°EIlyinskoe — 55.02°N, 48.83°EKutuluk — 51.34°N, 55.76°EKutulukskaya — 52.78°N, 53.16°EKama Region Fifth — 55.02°N, 48.87°E

Loading coastlines…

The named rock units Dvinosaurus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 occurrences have no formation on record, which is common for older literature.

Dvinosaurus and its relatives

Permian

Where Dvinosaurus and its relatives were recorded in the Permian.

Found in the same rock

273 taxa

The Paleobiology Database records 19 sites for Dvinosaurus, 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

12 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. 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 Dvinosaurus

Credit
Dmitry Bogdanov
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itDvinosauridae through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Amalitzky 1921