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Telmatosauridae

Osteichthyes - Telmatosauridae

Taxonomy
Telmatosauridae was named by Magyar et al. (2026) [The largest clade containing Telmatosaurus transsylvanicus (Nopcsa, 1900), but not Gobihadros mongoliensis Tsogtbaatar et al., 2019, Hadrosaurus foul�kii Leidy, 1858 and Claosaurus agilis Marsh, 1872b. This is a maximum-clade definition. Abbreviated defin�ition: max r (Telmatosaurus transsylvanicus [Nopcsa, 1900]  Gobihadros mongoliensis Tsogtbaatar et al., 2019 & Hadrosaurus foulkii Leidy, 1858 & Claosaurus agilis Marsh, 1872b).].

It was assigned to Hadrosauroidea by Magyar et al. (2026).

Entered
by G. Lloyd on 2026-04-12; modified by G. Lloyd on 2026-04-12

Synonymy list
YearName and author
2026Telmatosauridae Magyar et al.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Archosauromorpha(Huene 1946)
RankNameAuthor
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Neornithischia()
Pyrodontia
Cerapoda
suborderOrnithopoda
infraorderIguanodontia
Euiguanodontia
Dryomorpha
Ankylopollexia
Styracosterna
Hadrosauriformes
Hadrosauroidea()
familyTelmatosauridae
familyTelmatosauridae

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.

Fm. †Telmatosauridae Magyar et al. 2026
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G. †Kryptohadros Magyar et al. 2026
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Kryptohadros kallaiae Magyar et al. 2026
G. †Telmatosaurus Nopcsa 1903
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Invalid names: Hecatasaurus Brown 1910 [synonym], Limnosaurus Nopcsa 1900 [replaced]
G. †Tethyshadros Dalla Vecchia 2009
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Tethyshadros insularis Dalla Vecchia 2009
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: gregariouso
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: herbivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 20:40:05
Modified: 2009-01-03 22:40:05
Source: subo = suborder, o = order
References: Benton 1983, Marsh 1875, Kiessling 2004

Age range: base of the Late/Upper Campanian to the top of the Late/Upper Maastrichtian or 83.60000 to 66.00000 Ma

Collections (25 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Campanian - Middle Campanian83.6 - 72.2Italy (Friuli-Venezia Giulia) Hadrosauridae indet. (13286)
Late/Upper Campanian - Early/Lower Maastrichtian83.6 - 66.0France (Provence-Alpes-Côte d'Azur) Orthomerus transylvanicus (48864)
Early/Lower Maastrichtian72.2 - 66.0Romania (Alba) Hadrosauridae indet. (85496) Telmatosaurus sp. (93729 97813) Telmatosaurus transsylvanicus (80858 80859)
Early/Lower Maastrichtian72.2 - 66.0Romania (Hunedoara) Dinosauria indet. (13334) Limnosaurus transsylvanicus (59410) Telmatosaurus sp. (67818 96689 97948 105174 153889 163322 219171) Telmatosaurus transsylvanicus (10760)
Early/Lower Maastrichtian72.2 - 66.0Romania (Transylvania) Kryptohadros kallaiae (278586)
Late/Upper Maastrichtian72.2 - 66.0Romania (Hunedoara) Hadrosauroidea indet. (27894) Telmatosaurus sp. (14454 26369 221784) Telmatosaurus transsylvanicus (219186)
Maastrichtian72.2 - 66.0Romania (Hunedoara) Telmatosaurus sp. (221774 221781)