Riojasauridae information

Riojasaurids; Temporal range: Late Triassic, 228–213 Ma PreꞒ Ꞓ O S D C P T J K Pg N
	Riojasaurus skull cast
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	†Sauropodomorpha
Clade:	†Massopoda
Clade:	†Riojasauridae; Yates, 2007
Genera
	†Eucnemesaurus; †Riojasaurus;

Riojasauridae is an extinct family of sauropodomorph dinosaurs from the Late Triassic Period (late Carnian to Norian Ages). It contains the genera Riojasaurus and Eucnemesaurus. The Riojasauridae is considered a stem taxon, and is defined as "the most inclusive clade containing Riojasaurus incertus but not Plateosaurus engelhardti, Massospondylus carinatus, or Anchisaurus polyzelus".^[1] Geologic formations containing riojasaurid fossils include the Lower Elliot Formation of Orange Free State, South Africa (where fossils of Eucnemesaurus have been found), and the Los Colorados Formation, in La Rioja Province, Argentina (where fossils of Riojasaurus have been recovered).^[1]

^ ^a ^b Cite error: The named reference Yates2007 was invoked but never defined (see the help page).

[Yates2007-1] Cite error: The named reference Yates2007 was invoked but never defined (see the help page).

Riojasauridae information

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Riojasauridae

Massopoda

Dinosaur

Nigersaurus

Musankwa

Sauropodomorpha

Brachiosaurus

Argentinosaurus

Brontosaurus

Diplodocus

Apatosaurus

Titanomachya

Supersaurus

Bruhathkayosaurus

Eucnemesaurus

Gigantosaurus

Sidersaura

Dreadnoughtus

Titanosaurus

Patagotitan

Giraffatitan

Mamenchisaurus

Sauropod hiatus

Pachysauriscus

Plateosaurus

Chucarosaurus

Barosaurus

Aegyptosaurus

Amargasaurus

Sauroposeidon

Riojasaurids Temporal range: Late Triassic, 228–213 Ma PreꞒ Ꞓ O S D C P T J K Pg N

Riojasaurus skull cast
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	†Sauropodomorpha
Clade:	†Massopoda
Clade:	†Riojasauridae Yates, 2007
Genera
†Eucnemesaurus †Riojasaurus