Summary:

- This article discusses the discovery of a new species of extinct giant panda found in southwestern China. The fossil remains indicate this panda was significantly larger than the modern giant panda, weighing up to 350 kg.

- Genetic analysis of the fossil remains shows this extinct panda species was a close relative of the modern giant panda, but branched off from the lineage around 4-6 million years ago.

- The discovery of this giant panda species provides valuable insights into the evolution and diversity of pandas throughout history, and how environmental changes may have led to the emergence and eventual extinction of this larger panda form.