Its remains were recovered near Dona Francisca in central Rio Grande do Sul, from rocks within the UNESCO Quarta Colônia Geopark. Silescelida acristata was a relatively small, slender animal that moved on all four limbs. One of the most significant characteristics of Silescelida acristata lies in its femur, the thigh bone. A lost fragment unlocks the speciesThe discovery of Silescelida acristata also has an unusual history. Discoveries such as Silescelida acristata show that even isolated parts of the skeleton can reveal fundamental information about evolution.