Huayangosaurus was an incredibly early stegosaurian, possibly the earliest known. Huayangosaurus fossils can be dated back 165 million years, some 20 million years prior to when Stegosaurus lived. At only 4 metres (13 feet) long, Huayangosaurus is also one of the smallest stegosaurians known.
Chinese giant salamander (娃娃鱼) a.k.a ‘baby fish’ due to the sound they make that sounds like a baby crying.
The Chinese giant salamander is one of the largest salamanders and one of the largest amphibians in the world. It is fully aquatic and is endemic to rocky mountain streams and lakes in the Yangtze river basin of central China.
The Chinese giant salamander is considered to be a "living fossil". Although protected under Chinese laws, its population has faced severe declined over the last 70 years and is currently (2022) listed as threatened. There are evidence indicating that the Chinese giant salamander may be composed of at least five cryptic species, further compounding each individual species' endangerment. It can reach up to 50 kg (110 lb) in weight and 1.8 m (5.9 ft) in length.
Here is a video of a 200-year-old Chinese giant salamander that was found in a cave.