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Irajatherium Temporal range: Late Triassic ~221.5–205.6 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Humeral osteohistology of I. hernandezi
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	Cynodontia
Family:	†Tritheledontidae
Genus:	†Irajatherium Bonaparte 2005
Type species
Irajatherium hernandezi Bonaparte 2005
Species
I. hernandezi Bonaparte 2005

Irajatherium is an extinct genus of cynodonts, known only of the type species Irajatherium hernandezi. It is named in honor of Irajá Damiani Pinto.

Species

Irajatherium hernandezi is a species known only by a humerus, a femur, two jaws and an upper arch incomplete, has the upper canine teeth after pills across and the post-mandibular canines with a more developed central cusp, followed by three smaller ones. It was collected in the Candelária Formation in the municipality of Faxinal do Soturno in the Paraná Basin of southeastern Brazil.

References

1. Botha-Brink, 2018, p.11
2. Martinelli et al., 2005
3. Revista Ciência Hoje Archived 2010-10-10 at the Wayback Machine

Bibliography

• Botha-Brink, Jennifer; Bento Soares, Marina; Martinelli, Agustín G. (2018), "Osteohistology of Late Triassic prozostrodontian cynodonts from Brazil" (PDF), PeerJ, 5029: 1–26, retrieved 2019-03-25
• Martinelli, A.G.; Bonaparte, J.F.; Schultz, C.L.; Rubert, R. (2005), "A new tritheledontid (Therapsid, Eucynodontia) from the Late Triassic Rio Grande do Sul (Brazil) and its phylogenetic relationships among carnivorous non-mammalian eucynodonts" (PDF), Ameghiniana, 42 (1): 191–208, retrieved 2019-03-26

External links

• Dinosaurs of Rio Grande do Sul
• Sociedade Brasileira de Paleontologia
• Figura

v t e Cynodontia
Kingdom: Animalia Phylum: Chordata Clade: Synapsida Clade: Therapsida Clade: Eutheriodontia Synapsida see Synapsida Cynodontia see below↓
Cynodontia Cynodontia †Dvinia †Nanocynodon †Madysaurus †Uralocynodon †Charassognathidae Abdalodon Charassognathus Nshimbodon †Procynosuchidae Procynosuchus Sludica Epicynodontia †Bolotridon †Cynosaurus †Nanictosaurus †Nythosaurus †Platycraniellus †Thrinaxodon †Vetusodon †Galesauridae Galesaurus Progalesaurus Eucynodontia †Kataigidodon †Cynognathia see Cynognathia Probainognathia see below↓
Probainognathia Probainognathia †Agudotherium †Candelariodon †Charruodon †Lumkuia †Protheriodon †Tessellatia †Chiniquodontidae Aleodon Chiniquodon Cromptodon? Riojanodon †Probainognathidae Bonacynodon Probainognathus †Ecteniniidae Diegocanis Ecteninion Trucidocynodon Prozostrodontia †Alemoatherium †Deccanodon †Dromatherium †Inditherium †Microconodon †Polonodon †Pseudotriconodon †Rewaconodon †Santacruzgnathus †Therioherpeton †Tricuspes †Prozostrodontidae Prozostrodon Pseudotherium †Tritheledontidae Chaliminia Diarthrognathus Elliotherium Irajatherium Pachygenelus Riograndia? Tritheledon Mammaliamorpha †Adelobasileus †Botucaraitherium †Brasilodon †Sinoconodon †Tikiodon †Tritylodontidae Bienotherium Bienotheroides Bocatherium Dianzhongia Dinnebitodon Fossiomanus Kayentatherium Lufengia Montirictus Nuurtherium Oligokyphus Polistodon Shartegodon Stereognathus Tritylodon Xenocretosuchus Yuanotherium Yunnanodon Mammaliaformes see below↓
Mammaliaformes Mammaliaformes †Bocaconodon †Brachyzostrodon †Bridetherium †Cherwellia †Cifellilestes †Delsatia †Dianoconodon †Dinnetherium †Dyskritodon †Eozostrodon †Erythrotherium †Gondwanadon †Hadrocodium †Hallautherium †Helvetiodon †Indotherium †Indozostrodon †Megazostrodon †Morganucodon †Paceyodon †Paikasigudodon †Purbeckodon †Rosierodon †Sinoconodon? †Storchodon †Stylidens †Wareolestes †Woutersia †Kuehneotheriidae Fluctuodon Kotatherium Kuehneon Kuehneotherium †Shuotheriidae Feredocodon Itatodon? Paritatodon? Pseudotribos Shuotherium †Docodonta Agilodocodon Borealestes Castorocauda Cyrtlatherium Dobunnodon Docodon Docofossor Dsungarodon Ergetiis Gondtherium? Haldanodon Hutegotherium Itatodon? Khorotherium Krusatodon Microdocodon Paritatodon? Peraiocynodon Sibirotherium Simpsonodon Tashkumyrodon Tegotherium †Haramiyida Avashishta? Hypsiprymnopsis? Haramiyavia Kalaallitkigun Kollikodon? Mojo? Theroteinus Thomasia Euharamiyida Allostaffia? Arboroharamiya Baidabatyr? Butlerodon Cryoharamiya Kermackodon? Maiopatagium Megaconus? Qishou Sharypovoia Shenshou Sineleutherus Vilevolodon Woodeatonia Xianshou Gondwanatheria? Hahnodontidae? Cifelliodon Denisodon Hahnodon Crown-Mammalia see Mammalia
See also Incertae sedis †Cistecynodon †Eoraetia †Gaumia †"Hahnia" †Kunminia †Lepagia †Meurthodon †Mitredon †Panchetocynodon †Redondagnathus †Saurodesmus? Paraphyletic / Polyphyletic groups Dromatheriidae Morganucodonta Symmetrodonta Triconodonta
Category

• Brazil
• Paleontology

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• Tritheledontidae
• Carnian genera
• Late Triassic synapsids of South America
• Triassic Brazil
• Fossils of Brazil
• Paraná Basin
• Fossil taxa described in 2005
• Taxa named by José Bonaparte
• Cynodont stubs