Shuvosaurus

Shuvosaurus is a genus of beaked, bipedal poposauroid pseudosuchian from the Late Triassic of western Texas. Despite superficially resembling a theropod dinosaur, especially the ostrich-like ornithomimids, it is instead more closely related to living crocodilians than to dinosaurs. Shuvosaurus is known by the type and only species S. inexpectatus, and is closely related to the very similar Effigia within the clade Shuvosauridae. Shuvosaurus was originally described from a restored skull and very few fragmentary postcranial bones as a probable ornithomimosaur, or at least a very ornithomimosaur-like early theropod. The true pseudosuchian affinities of Shuvosaurus were only recognised after the discovery of Effigia linked the skull of Shuvosaurus with similar poposauroid skeletal remains found in the same quarry.

Shuvosaurus

Nobu Tamura ( http://spinops.blogspot.com ) · 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
ShuvosauridaePBDB
Diet
carnivorePBDB, for Pseudosuchia
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Diapsida

Time the record covers

At most 36 million years on record.

Every occurrence read is dated to somewhere between 237 Mya and 201.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Middle Triassic — about 0 of 22 occurrencesLate Triassic — about 22 of 22 occurrencesLate TriassicEarly Jurassic — about 0 of 22 occurrences238–236 Mya — about 0.0 occurrences236–235 Mya — about 0.0 occurrences235–234 Mya — about 0.0 occurrences234–233 Mya — about 0.0 occurrences233–232 Mya — about 0.0 occurrences232–230 Mya — about 0.0 occurrences230–229 Mya — about 0.0 occurrences229–228 Mya — about 0.0 occurrences228–227 Mya — about 0.6 occurrences227–225 Mya — about 1.0 occurrences225–224 Mya — about 1.0 occurrences224–223 Mya — about 1.0 occurrences223–222 Mya — about 1.0 occurrences222–220 Mya — about 1.0 occurrences220–219 Mya — about 1.0 occurrences219–218 Mya — about 1.0 occurrences218–217 Mya — about 1.0 occurrences217–215 Mya — about 1.0 occurrences215–214 Mya — about 1.0 occurrences214–213 Mya — about 1.0 occurrences213–212 Mya — about 1.0 occurrences212–211 Mya — about 1.0 occurrences211–209 Mya — about 1.0 occurrences209–208 Mya — about 1.0 occurrences208–207 Mya — about 1.0 occurrences207–206 Mya — about 1.0 occurrences206–204 Mya — about 1 occurrence204–203 Mya — about 1 occurrence203–202 Mya — about 1 occurrence202–201 Mya — about 0.6 occurrences237.7 Mya200.7 Mya

22 occurrences of Shuvosaurus 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

22 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

5 formations

Chinle — 34.44°N, 109.46°WChinle — 35.09°N, 109.79°WChinle — 35.88°N, 111.28°WChinle — 35.82°N, 111.25°WChinle — 35.65°N, 111.12°WChinle — 34.94°N, 109.74°WChinle — 36.09°N, 111.36°WChinle — 34.68°N, 109.58°WBull Canyon — 35.37°N, 103.38°WCooper Canyon — 33.52°N, 101.32°WCooper Canyon — 33.11°N, 101.45°WGarita Creek — 35.48°N, 105.88°WColorado City — 32.17°N, 101.25°W

Loading coastlines…

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

Shuvosaurus and its relatives

Late Triassic

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

Found in the same rock

143 taxa

The Paleobiology Database records 20 sites for Shuvosaurus, 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

9 references

Each of the 22 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 Shuvosaurus

Credit
Nobu Tamura ( http://spinops.blogspot.com )
Licence
CC BY 3.0
Commercial use
the licence allows it

No 3D scan of Shuvosaurus was found in Sketchfab.

Smithsonian Open Access and MorphoSource were 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 itShuvosauridae through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Chatterjee 1993