An article published in the journal “Current Biology” describes the study of fossils of Drepanosaurus unguicaudatus, a reptile that lived in the Triassic period, about 212 million years ago. The discovery complete fossils of this animal in New Mexico allowed to carry out detailed exams which confirmed that it had very strong forelimbs with a huge claw and an anatomic conformation definitely out of the normal that surprised the paleontologists.