Varanosaurus

Varanosaurus is an extinct genus of early ophiacodontid synapsid that lived during the Artinskian and Kungurian ages of the Permian.

Varanosaurus

Nobu Tamura email:nobu.tamura@yahoo.com http://spinops.blogspot.com/ · CC BY-SA 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
OphiacodontidaePBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Amniota

Time the record covers

At most 16 million years on record.

Every occurrence read is dated to somewhere between 290.1 Mya and 274.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Permian — about 6 of 6 occurrencesPermian291–290 Mya — about 0.0 occurrences290–289 Mya — about 0.2 occurrences289–289 Mya — about 0.2 occurrences289–288 Mya — about 0.2 occurrences288–288 Mya — about 0.2 occurrences288–287 Mya — about 0.2 occurrences287–287 Mya — about 0.2 occurrences287–286 Mya — about 0.2 occurrences286–286 Mya — about 0.2 occurrences286–285 Mya — about 0.2 occurrences285–284 Mya — about 0.2 occurrences284–284 Mya — about 0.2 occurrences284–283 Mya — about 0.2 occurrences283–283 Mya — about 0.2 occurrences283–282 Mya — about 0.2 occurrences282–282 Mya — about 0.2 occurrences282–281 Mya — about 0.2 occurrences281–281 Mya — about 0.2 occurrences281–280 Mya — about 0.2 occurrences280–279 Mya — about 0.2 occurrences279–279 Mya — about 0.2 occurrences279–278 Mya — about 0.2 occurrences278–278 Mya — about 0.2 occurrences278–277 Mya — about 0.2 occurrences277–277 Mya — about 0.2 occurrences277–276 Mya — about 0.2 occurrences276–276 Mya — about 0.2 occurrences276–275 Mya — about 0.2 occurrences275–274 Mya — about 0.2 occurrences274–274 Mya — about 0.0 occurrences290.6 Mya273.9 Mya

6 occurrences of Varanosaurus 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

6 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

Arroyo — 33.77°N, 99.22°WArroyo — 33.70°N, 99.27°WBelle Plains — 33.69°N, 99.02°WBelle Plains — 33.74°N, 98.90°WWaggoner Ranch — 33.73°N, 99.09°W

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

Varanosaurus and its relatives

Permian

Where Varanosaurus and its relatives were recorded in the Permian.

Found in the same rock

65 taxa

The Paleobiology Database records 5 sites for Varanosaurus, 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

5 references

Each of the 6 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 content3

Picture of Varanosaurus

Credit
Nobu Tamura email:nobu.tamura@yahoo.com http://spinops.blogspot.com/
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Varanosaurus acutirostris · AMNH:FARB:4174

3D model

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

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 itOphiacodontidae through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Broili 1904