So start off the New Year, one of the 25 Top Lost Species from Re:Wild has been rediscovered, Omiltemi Cottontail Rabbit.
Rabbit lost for 120 years found hopping around in the mountains
A painr of antlers found in Laos in 1991 were confirmed to be Schomburgk's Deer! This was just mentioned by @Sarus Crane in the gallery and thought it needed its own thread:
Scientists find 28-year-old antlers in Laos belonging to deer species believed extinct in the 1930s | Daily Mail Online
The Oriental Blue Clearwing Heterosphecia tawonoides, has been rediscovered in Taman Negara National Park, Malaysia. This species was thought to be extinct for 130 years.
Rare Blue Moth Discovered 130 Years After It Went 'Extinct'
New snake-species are still discovered with some regularity but discovering a complete new genus is very rare !
Wildlife Extra News - New genus of snake recognised on Sri Lanka