PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Diamantinasauria

Osteichthyes

Taxonomy

Diamantinasauria was named by Poropat et al. (2021).

It was assigned to Titanosauria by Poropat et al. (2021); to Saltasauroidea by Navarro et al. (2022); and to Somphospondyli by Beeston et al. (2024).

Subtaxa

Australotitan cooperensis, Diamantinasaurus, Mansourasaurus, Sarmientosaurus, Savannasaurus, Wintonotitan

Synonyms

Australotitan cooperensis was named by Hocknull et al. (2021). Its type specimen is EMF102, a set of limb elements, and it is a 3D body fossil. Its type locality is Southern Plevna Downs Station, EML011(a), which is in a Cenomanian/Turonian floodplain siltstone in the Winton Formation of Australia. It is the type species of Australotitan.

It was considered a nomen dubium by Beeston et al. (2024).

Synonymy list

Year	Name and author
2021	Australotitan cooperensis Hocknull et al.
2021	Diamantinasauria Poropat et al.
2021	Australotitan cooperensis Rigby et al. p. 2
2022	Diamantinasauria Navarro et al. p. 344 fig. 13
2023	Australotitan cooperensis Poropat et al. p. 163
2023	Australotitan cooperensis Poropat et al. p. 4
2024	Diamantinasauria Beeston et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
class	Osteichthyes
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()
—	Romeriida
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)

Rank	Name	Author
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Saurischia	()
—	Eusaurischia
—	Sauropodomorpha	(Huene 1932)
—	Massopoda
—	Sauropodiformes
—	Sauropoda	()
—	Gravisauria
—	Eusauropoda
—	Neosauropoda
—	Macronaria
—	Titanosauriformes
—	Somphospondyli
—	Diamantinasauria
—	Diamantinasauria

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Unr. †Diamantinasauria Poropat et al. 2021

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G. †Diamantinasaurus Hocknull et al. 2009

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†Diamantinasaurus matildae Hocknull et al. 2009

G. †Mansourasaurus Sallam et al. 2018

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†Mansourasaurus shahinae Sallam et al. 2018

G. †Sarmientosaurus Martínez et al. 2016

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†Sarmientosaurus musacchioi Martínez et al. 2016

G. †Savannasaurus Poropat et al. 2016

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†Savannasaurus elliottorum Poropat et al. 2016

G. †Wintonotitan Hocknull et al. 2009

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†Wintonotitan wattsi Hocknull et al. 2009

Invalid names: Australotitan cooperensis Hocknull et al. 2021 [nomen dubium]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

hydroxyapatiteinfrao

Entire body:

yesinfrao

Adult length:

10 to < 100infrao

Adult width:

10 to < 100infrao

Adult height:

10 to < 100infrao

Thickness:

thickinfrao

Architecture:

compact or denseinfrao

Form:

sphericalinfrao

Ontogeny:

accretion, modification of partsinfrao

Grouping:

gregariousinfrao

Environment:

terrestrialinfrao

Locomotion:

actively mobileinfrao

Life habit:

ground dwellinginfrao

Diet:

herbivoreinfrao

Reproduction:

oviparousinfrao

Dispersal:

direct/internalinfrao

Dispersal 2:

mobileinfrao

Created:

2004-12-14 12:49:10

Modified:

2004-12-14 14:49:10

Source: infrao = infraorder

References: Kiessling 2004, Marsh 1875

Age range: base of the Middle Cenomanian to the top of the Middle Campanian or 100.50000 to 72.20000 Ma

Collections (24 total)

Time interval	Ma	Country or state	Original ID and collection number
Cenomanian	100.5 - 93.9	Australia (Queensland)	Austrosaurus sp. (60799)
Late/Upper Cenomanian	100.5 - 93.9	Australia (Queensland)	Diamantinasaurus matildae (225325 229882)
Cenomanian - Early/Lower Turonian	100.5 - 89.8	Australia (Queensland)	Diamantinasauria indet. (113321 114108 115408 123269 193756 226547) Diamantinasaurus matildae (234749 234750) Savannasaurus elliottorum (234751) Wintonotitan wattsi (153780 167927)
Cenomanian - Turonian	100.5 - 89.8	Argentina (Chubut)	Titanosauriformes indet. (70674)
Late/Upper Cenomanian - Early/Lower Turonian	100.5 - 89.8	Australia (Queensland)	Australotitan cooperensis (220531) Diamantinasauria indet., Australotitan cooperensis (220530) Diamantinasaurus matildae, Wintonotitan wattsi, Titanosauriformes indet., Austrosaurus sp. (62553) Sauropoda indet. (60792) Titanosauria indet. (234752)
Middle Cenomanian - Early/Lower Turonian	100.5 - 89.8	Australia (Queensland)	Australotitan cooperensis (220528) Diamantinasaurus matildae (90140) Savannasaurus elliottorum (153781)
Middle Campanian	83.6 - 72.2	Egypt (New Valley)	Titanosauria indet. (191982)