''Jachaleria'' was a

dicynodont Dicynodontia is an extinct clade of anomodonts, an extinct type of non-mammalian therapsid. Dicynodonts were herbivorous animals with a pair of tusks, hence their name, which means 'two dog tooth'. Members of the group possessed a horny, typic ...

herbivore that lived from the

Ladinian The Ladinian is a stage and age in the Middle Triassic series or epoch. It spans the time between Ma and ~237 Ma (million years ago). The Ladinian was preceded by the Anisian and succeeded by the Carnian (part of the Upper or Late Triassic ...

to Norian stages of the Middle to

Late Triassic The Late Triassic is the third and final epoch of the Triassic Period in the geologic time scale, spanning the time between Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch and followed by the Early Jurassic Epoch. ...

, from approximately 240 to 220 million years ago. ''Jachaleria'' was one of the last representatives of the

s, occurring in

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

and

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

. It lacked teeth, much like ''

Stahleckeria ''Stahleckeria'' is an extinct genus of Middle Triassic (Ladinian) dicynodonts.Dinodontosaurus ''Dinodontosaurus'' (meaning "terrible-toothed lizard") is a genus of dicynodont therapsid. It was medium to large dicynodont of the Triassic (with skull up to long) and had a beak corneum. It lived in the Middle Triassic but disappeared in the ...

''.Martínez et al., 2013

Species

* ''Jachaleria candelariensis'' is found near Candelária City, in the

Paraná Basin The Paraná Basin ( pt, Bacia do Paraná, es, Cuenca del Paraná) is a large cratonic sedimentary basin situated in the central-eastern part of South America. About 75% of its areal distribution occurs in Brazil, from Mato Grosso to Rio Grande d ...

of southeastern Brazil. It grew to perhaps in length and had an estimated body mass of . Throughout the early part of the

Upper Triassic The Late Triassic is the third and final epoch of the Triassic Period in the geologic time scale, spanning the time between Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch and followed by the Early Jurassic Epoch. ...

s were absent from the paleorrota and the

rhynchosaur Rhynchosaurs are a group of extinct herbivorous Triassic archosauromorph reptiles, belonging to the order Rhynchosauria. Members of the group are distinguished by their triangular skulls and elongated, beak like premaxillary bones. Rhynchosaurs ...

s were the dominant herbivores. At the end of

Carnian The Carnian (less commonly, Karnian) is the lowermost stage (stratigraphy), stage of the Upper Triassic series (stratigraphy), Series (or earliest age (geology), age of the Late Triassic Epoch (reference date), Epoch). It lasted from 237 to 227 m ...

, however, the

s became extinct and the

s appear in their place. ''Jachaleria candelariensis'' occurs in the

Caturrita Formation The Caturrita Formation is a rock formation found in Rio Grande do Sul, Brazil. Its sediments were deposited in the Paraná Basin. The formation is from the Upper Triassic and forms part of the Santa Maria Supersequence in the upper section of th ...

. * ''Jachaleria colorata''Jachaleria colorata.
is found in

, in the Chañares, Ischigualasto and

Los Colorados Formation The Los Colorados Formation is a sedimentary rock formation of the Ischigualasto-Villa Unión Basin, found in the provinces of San Juan and La Rioja in Argentina. The formation dates back to the Norian age of the Late Triassic. The up to thick f ...

s of the Ischigualasto-Villa Unión Basin in northwestern Argentina. It is very similar to ''Jachaleria candelariensis''.

References

Bibliography

External links

''Sociedade Brasileira de Paleontologia''
{{Taxonbar, from=Q6110712 Kannemeyeriiformes Ladinian genera Carnian genera Norian genera Late Triassic synapsids of South America Middle Triassic synapsids of South America Triassic Argentina Fossils of Argentina Chañares Formation Ischigualasto Formation Los Colorados Formation Triassic Brazil Fossils of Brazil Paraná Basin Fossil taxa described in 1971 Taxa named by José Bonaparte Anomodont genera

Species

See also

References

Bibliography

External links