18 de mayo de 2019

Scientists find the footprints of a 100-thousand-year-old saber toothed tiger in Miramar, Argentine.



Es la primera vez que un equipo de investigación encuentra huellas de este animal extinto.


Hace treinta mil años, las llanuras de la provincia de Buenos Aires se veían muy diferentes de ahora. Los prados no existían y las llanuras estaban cubiertas de arbustos secos como los patagónicos. Esas llanuras estaban llenas de mamíferos que actualmente están extintos, incluidos los perezosos terrestres enormes y pesados, los grandes animales con pezuñas, como los toxodones y las macrauchenias, y los grandes gluptodontes que son parientes de los armadillos. Entre esos gigantes vivía el Smilodon o tigre dientes de sable.


Un grupo de investigadores de la Fundación Azara de la Universidad de Maimónides, el Museo Municipal de Punta Hermengo de Miramar, el Museo Argentino de Ciencias Naturales y el Consejo Nacional de Investigación Científica y Técnica (CONICET) lograron encontrar las huellas fósiles de Smilodon y proporcionar información importante. “Encontrar huellas fósiles es raro e inusual en cualquier investigación paleontológica. De hecho, esta es la primera vez que se encuentran las huellas de tigre con dientes de sable ", explica Mariano Magnussen Saffer, uno de los paleontólogos del estudio.


The Smilodon was a great feline, whose canine teeth as sabers protruded up to 25 centimeters from the mouth. With those teeth it penetrated thick leather and hard shells of the great mammals that were their prey. Unfortunately, as the experts only know its skeleton, the way of life of the Smilodon is a mystery.

The footprints are 100 thousand years old and were found in Miramar, in the province of Buenos Aires. The Smilodon left those traces as it walked around a small lake. The find was published in Ichnos.


“The footprints show that Smilodon was an animal adapted to walk long distances in those plains of the Pampas Region. Furthermore, experts learnt that the Smilodon’s front limbs were broad and robust, much larger than the hind limbs. This happens in animals that are not good runners so they attack their prey by ambush. The Smilodon would wait, hidden, for a great mammal to appear. At the slightest distraction, the saber-toothed tiger would swoop down on its prey, knock it down so as to grab it with its forelimbs and sink its sharp canine teeth like knives”, Mariano Magnussen Saffer described.

Due to this and other important paleontological discoveries, the Municipality of General Alvarado and Azara Foundation are planning to build a new local Museum of Natural Sciences considering the current theme of the Punta Hermengo Municipal Museum.