
Două rânduri paralele de semne mici, fiecare cu un diametru de aproximativ doi milimetri, sunt cele mai vechi urme ale paşilor unui animal care se deplasa pe Pământ în urmă cu 570 de milioane de ani. Descoperirea a schimbat ordinea în topul celor mai vechi dovezi ale deplasării animalelor cu ajutorul picioarelor. Este vorba de o creatură mică, despre care se crede că a trăit înaintea Cambrianului, când majoritatea grupelor de vieţuitoare abia începeau să evolueze. Potrivit profesorului Loren Babcock, autorul descoperirii, acest animal avea numai câţiva centimetri şi mai multe picioare foarte subţiri.
Avea câţiva centimetri
Cercetările au avut loc într-o regiune muntoasă din Nevada. Pentru găsirea eventualelor fosile ale acestei creaturi, căutările vor continua în zone din Rusia, Australia sau Namibia.
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