User:Abyssal/Portal:Devonian/Selected picture/11

A Rhynchospira formosa lampshell, Order Athyridida, Family Rhynchospirinidae, 10mm along the axis, pedunculate valve, collected at White Mound, Haragan, Oklahoma, USA, from the late Lower Devonian (Middle Emsian).
Photo credit: Dwergenpaartje