Jachaleria
Encyclopedia
Jachaleria was a dicynodont
herbivore
that lived in the Carnian
stage of the Upper Triassic, approximately 220 million years ago. Jachaleria was one of the last representatives of the dicynodont
s, occurring in Argentina
and Brazil
. It lacked teeth, much like Stahleckeria
, but was closer in size to Dinodontosaurus
.
Dicynodont
Dicynodontia is a taxon of anomodont therapsids or mammal-like reptiles. Dicynodonts were small to large herbivorous animals with two tusks, hence their name, which means 'two dog tooth'...
herbivore
Herbivore
Herbivores are organisms that are anatomically and physiologically adapted to eat plant-based foods. Herbivory is a form of consumption in which an organism principally eats autotrophs such as plants, algae and photosynthesizing bacteria. More generally, organisms that feed on autotrophs in...
that lived in the Carnian
Carnian
The Carnian is the lowermost stage of the Upper Triassic series . It lasted from about 228.7 till 216.5 million years ago . The Carnian is preceded by the Ladinian and is followed by the Norian...
stage of the Upper Triassic, approximately 220 million years ago. Jachaleria was one of the last representatives of the dicynodont
Dicynodont
Dicynodontia is a taxon of anomodont therapsids or mammal-like reptiles. Dicynodonts were small to large herbivorous animals with two tusks, hence their name, which means 'two dog tooth'...
s, occurring in Argentina
Argentina
Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...
and Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...
. It lacked teeth, much like Stahleckeria
Stahleckeria
Stahleckeria was a Middle Triassic dicynodont, living about 240 million years ago. It was similar to Kannemeyeria. It's named in honor of Rudolf Stahlecker....
, but was closer in size to Dinodontosaurus
Dinodontosaurus
Dinodontosaurus is a genus of dicynodont therapsid. It was one of the largest herbivores of the Triassic and had a beak corneum...
.
Species
- Jachaleria candelariensis is found near CandeláriaCandelária, Rio Grande do Sul- Paleontology :This city belongs to the geopark of Paleorrota.Museum of the city that have fossils:#Museum Aristides Carlos Rodrigues.-Day of Paleorrota:...
City, in the paleorrotaPaleorrotaPaleorrota , is a geopark located in the center of the Brazilian state of Rio Grande do Sul. The rocks and fossils found along the route date back to the times when there was only one supercontinent Pangaea....
geoparkGeoparkA Geopark is defined by the United Nations Educational, Scientific and Cultural Organization in its UNESCO Geoparks International Network of Geoparks programme as follows:...
in Brazil. It grew to perhaps 3 meters in length and weighed 300 kilograms. Throughout the early part of the Upper Triassic dicynodontDicynodontDicynodontia is a taxon of anomodont therapsids or mammal-like reptiles. Dicynodonts were small to large herbivorous animals with two tusks, hence their name, which means 'two dog tooth'...
s were absent from the paleorrotaPaleorrotaPaleorrota , is a geopark located in the center of the Brazilian state of Rio Grande do Sul. The rocks and fossils found along the route date back to the times when there was only one supercontinent Pangaea....
and the rhynchosaurRhynchosaurRhynchosaurs were a group of Triassic diapsid reptiles related to the archosaurs.-Description:Rhynchosaurs were herbivores, and at times abundant , with stocky bodies and a powerful beak...
s were the dominant herbivoreHerbivoreHerbivores are organisms that are anatomically and physiologically adapted to eat plant-based foods. Herbivory is a form of consumption in which an organism principally eats autotrophs such as plants, algae and photosynthesizing bacteria. More generally, organisms that feed on autotrophs in...
s. At the end of CarnianCarnianThe Carnian is the lowermost stage of the Upper Triassic series . It lasted from about 228.7 till 216.5 million years ago . The Carnian is preceded by the Ladinian and is followed by the Norian...
, however, the rhynchosaurRhynchosaurRhynchosaurs were a group of Triassic diapsid reptiles related to the archosaurs.-Description:Rhynchosaurs were herbivores, and at times abundant , with stocky bodies and a powerful beak...
s became extinct and the dicynodontDicynodontDicynodontia is a taxon of anomodont therapsids or mammal-like reptiles. Dicynodonts were small to large herbivorous animals with two tusks, hence their name, which means 'two dog tooth'...
s appear in their place. Jachaleria candelariensis occurs in the Caturrita FormationCaturrita FormationThe Caturrita Formation is a rock formation found in Rio Grande do Sul, Brazil. Its sediments were deposited in the Paraná Basin. The formation has a late Carnian to early Norian age and forms part of the Santa Maria Supersequence in the upper section of the Rosário do Sul Group.-Etymology:The...
.
- Jachaleria colorata is found in ArgentinaArgentinaArgentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...
, in the Los Colorados FormationLos Colorados FormationThe Los Colorados Formation is a sedimentary rock formation found in La Rioja, Argentina. It has a Norian age , and is notable for its fossils of early dinosaurs, including the coelophysoid Zupaysaurus and the "prosauropods" Coloradisaurus, Lessemsaurus, and Riojasaurus.-Dinosaurs:Indeterminate...
. It is very similar to Jachaleria candelariensis.