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During the period Triassiku (252 million million years ago), reptiles similar to mammals called therapsids plus & # 39; ancestors to dinosaurs, crocodiles, mammals, Pterosaur, turtles, frogs and lizards.
One group of therapeutic & # 39; are the deċinodotti. Researchers at the University & # 39; Uppsala in Sweden, along with & # 39; colleagues in Poland, fossil discovered a new genus of & # 39; ġinġeniku ġentonali. The new species Lisowicia Bojan is described in the journal science.
The land is & # 39; about 4.5 billion years and has undergone several geological periods and dramatic change. During Triassiku period, about 252-201 million years ago, all land on Earth came together and formed a huge continent called Pangea. During this time, the first dinosaurs arose and ancestors to crocodiles, mammals, Pterosaur, turtles, frogs and lizards. Recently, scientists have become interested in & # 39; other types & # 39; animals, therapeutic. Therapsids reptiles were "similar to mammals' and are ancestors to mammals, including humans, found today. One group & # 39; terapasidi called dicynodonts. All species & # 39; dicynodont were herbivores (plant eaters) and their sizes ranged from small to large burrowers browsers. Many of them were also toothless. They survived the mass extinction at the Permian and became the dominant terrestrial herbivori in Trijassu of & # 39; Late and Mid-Size. Were intended died before dinosaurs became the dominant form of & # 39; tetrapods on land.
Evolution Research and Development at & # 39; Uppsala University in & # 39; & # 39 collaboration with first, researchers in the program & # 39;; researchers at the Polish Academy of Sciences (Warsaw), discovered fossils of a new species & # 39; dicynodont in Polish village & # 39; Lisowice. The species was named after the village Lisowicia Bojan German and comparative anatomists named Ludwig Heinrich Bojanus was working in & # 39; Vilnius is known to make several important anatomical discoveries. The findings show that Lisowicia was about the size of & # 39; today's elephant, a & # 39; about 4.5 meters long, a & # 39; 2.6 meters high and was weighed approximately 9 tons, which is 40% larger than previously known. The bone analysis showed that the party had rapid growth, such as mammals or dinosaur. He lived during the Late Trijassu, about 210-205 million years ago, about 10 million years after the previous findings & # 39; deċinodotti.
"The discovery of & # 39; Lisowicia change our ideas about the past history & # 39; dicynodonts, trijassiċi relatives of mammals. It was also a lot more questions about what really make them and so great dinosaurs", says Dr. Tomasz Sulej, the Polish Academy of Sciences.
"Dicynodonts were animals & # 39; amazing success in the Middle Trijassu and Late. Lisowicia is the smallest dicynodont and largest terrestrial tetrapods not a dinosaur from the Triassic. It is natural to want to know how laqons become so large. Lisowicia is hugely exciting because holes in & # 39; many of our classic ideas & # 39; "Triassic reptiles like mammals", says Dr. Grzegorz Niedzwiedzki, University & # 39; Uppsala.
The first findings & # 39; fossils from Lisowice in Poland in 2005 by Robert Borz? CKI and Piotr Menducki. Since then, more than 1,000 bones and bone fragments were collected from the area, including fossils from Lisowicia. The area is considered to have been the river deposit during the period of Late Trijassu.
The discovery & # 39; Lisowicia provides the first evidence that there was dicynodont of & # 39; size of the elephant like mammals were present at the same time as dinosaurs & # 39; sauropodomorph long known of the neck, contrary to previous belief. Sauropodomorphs include species such as Diplodocus or Brachiosaurus. Filling gaps in the fossil record & # 39; dicynodonts and show some anatomical features of & # 39; legs designed to characterize large mammals or dinosaurs also evolved in & # 39; sineapsid not mammals. Finally, these findings from Poland are the first substantive findings & # 39; deżinodi from late Trijassu in Europe.
"The discovery of & # 39; new species discovery is so important & # 39; time," says Dr. Tomasz Sulej.
Uppsala University
Header Image – Bones of the party & # 39; dicynodont, the location of & # 39; Lisowice, Silesia, Poland. Credit: Grzegorz Niedzwiedzki
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