Cora ciferrii

Cora ciferrii is a species of basidiolichen in the family Hygrophoraceae. The species was originally described in 1950 from Panama but was later found to have been confused with other similar-looking lichens for decades. In 2014, DNA studies helped scientists sort out this confusion and confirmed it as a distinct species with its current name. The lichen grows on the ground in misty mountain forests of Central and South America, forming large, wavy, shell-like structures that can reach over 10 cm (3.9 in) across....read more on Wikipedia.