Thysanopyge

Thysanopyge is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived in what is now South America during the early part of the Arenig stage of the Ordovician Period, a faunal stage which lasted from approximately 478 to 471 million years ago.

Distribution
Fossils of Thysanopyge have been found in:
 * Argentina
 * Acoite Formation
 * Las Aguaditas Formation
 * Santa Rosita Formation


 * Bolivia
 * Obispo Formation
 * San Lorenzo Formation