Tiny Dinosaur Fossil Reveals Evolution Secrets

Topic: Research News

Scientists discovered a nearly complete skeleton of Alnashetri cerropoliciensis, a tiny dinosaur that lived 90 million years ago. This find helps solve a long-standing mystery about Alvarezsaurs, a group of bird-like dinosaurs.

This discovery was led by University of Minnesota Twin Cities scientist Peter Makovicky and Argentine paleontologist Sebastian Apesteguía. Their findings were published in the journal Nature. The fossil was found in northern Patagonia, Argentina, at a site famous for preserving ancient animals.

The Alnashetri skeleton is significant because it provides a clear view of the animal's unusual body structure. For decades, scientists struggled to understand Alvarezsaurs because most well-preserved fossils were found in Asia, while those from South America were often incomplete.

Preparing the fossil was a slow and careful process. Researchers cleaned and assembled the delicate bones over the past decade to prevent damage. Peter Makovicky said,

Implications

Scientists discovered a nearly complete skeleton of Alnashetri cerropoliciensis, a tiny dinosaur that lived 90 million years ago. This find helps solve a long-standing mystery about Alvarezsaurs, a group of bird-like dinosaurs.