Diamantinasauria

Diamantinasauria is an extinct clade of somphospondylan titanosauriform sauropod dinosaurs with close affinities to the Titanosauria, known from the early Late Cretaceous (Cenomanian-Turonian) of South America and Australia. It was named by Poropat and colleagues in 2021, and contains four genera: Australotitan, Savannasaurus and Diamantinasaurus from the Winton Formation of Queensland, as well as Sarmientosaurus from the Bajo Barreal Formation of Patagonia. The existence of the clade indicates connectivity between Australia and South America via Antarctica during the Cretaceous period.

Diamantinasauria

Rubén D. F. Martínez ,Matthew C. Lamanna,Fernando E. Novas,Ryan C. Ridgely,Gabriel A. Casal,Javier E. Martínez,Javier… · CC BY 2.5 · 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
SomphospondyliPBDB
Diet
herbivorePBDB, for Sauropoda
Life habit
ground dwelling, gregariousPBDB, for Sauropoda
Motility
actively mobilePBDB, for Sauropoda
Environment
terrestrialPBDB, for Sauropoda

Time the record covers

At least 10 million years on record.

The record covers at least 93.9 Mya to 83.6 Mya. No occurrence read is dated outside 100.5 Mya to 72.2 Mya.

Early Cretaceous — about 0 of 28 occurrencesLate Cretaceous — about 28 of 28 occurrencesLate Cretaceous101–100 Mya — about 1 occurrence100–99 Mya — about 3 occurrences99–98 Mya — about 3 occurrences98–97 Mya — about 3 occurrences97–96 Mya — about 3 occurrences96–95 Mya — about 3 occurrences95–94 Mya — about 3 occurrences94–93 Mya — about 2 occurrences93–92 Mya — about 2 occurrences92–91 Mya — about 2 occurrences91–90 Mya — about 2 occurrences90–89 Mya — about 1 occurrence84–83 Mya — about 0.0 occurrences83–82 Mya — about 0.1 occurrences82–81 Mya — about 0.1 occurrences81–80 Mya — about 0.1 occurrences80–79 Mya — about 0.1 occurrences79–79 Mya — about 0.1 occurrences79–78 Mya — about 0.1 occurrences78–77 Mya — about 0.1 occurrences77–76 Mya — about 0.1 occurrences76–75 Mya — about 0.1 occurrences75–74 Mya — about 0.1 occurrences74–73 Mya — about 0.1 occurrences73–72 Mya — about 0.0 occurrences93.9 Mya83.6 Mya101.1 Mya71.6 Mya

28 occurrences of Diamantinasauria on record, most of them in the Late Cretaceous. 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

28 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

Winton — 22.68°S, 143.57°EWinton — 22.25°S, 142.48°EWinton — 22.35°S, 143.09°EWinton — 22.20°S, 142.53°EWinton — 26.68°S, 142.59°EWinton — 22.08°S, 143.51°EWinton — 22.15°S, 142.54°EWinton — 22.38°S, 142.94°EBajo Barreal — 44.77°S, 69.18°WQuseir — 25.56°N, 29.15°E

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

Diamantinasauria and its relatives

Late Cretaceous

Where Diamantinasauria and its relatives were recorded in the Late Cretaceous.

Found in the same rock

28 taxa

The Paleobiology Database records 24 sites for Diamantinasauria, 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 28 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Diamantinasauria

Credit
Rubén D. F. Martínez ,Matthew C. Lamanna,Fernando E. Novas,Ryan C. Ridgely,Gabriel A. Casal,Javier E. Martínez,Javier…
Licence
CC BY 2.5
Commercial use
the licence allows it

No 3D scan of Diamantinasauria 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 itSomphospondyli through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Poropat et al. 2021