Crystal skipper Crystal skipper Atrytonopsis quinteri, the crystal skipper is a newly described butterfly (family Hesperiidae) that is found only along a 30-mile (50 km) stretch of barrier islands in North Carolina. The skipper was first discovered in 1978 and the paper describing it as a full species was published in 2015. The crystal skipper is endemic to Bogue Banks and Bear Island in North Carolina, USA. Bogue Banks is approximately 25 miles long and Bear Island is about 3.5 miles long. The skipper is also found on several human-made dredge spoil islands within the vicinity of these two natural barrier islands.
Lulworth Formation Lulworth Formation The Lulworth Formation is a geologic formation in England. It dates from the late Tithonian to the mid Berriasian. It is a subunit of the Purbeck Group. It consists of three members, which are in ascending order, the Mupe Member, the Ridgway Member, and the Warbarrow Tout Member. The Mupe Member is typically 11 to 16 m thick and largely consists of marls and micrites with interbeds of calcareous mudstone. The Ridgeway Member is about 3 to 7 m thick and consists of in its western portion carbonaceous muds, marls and micrites, in the east the muds are