Rochechouart crater

Rochechouart crater is an impact crater tentatively centered at the hamlet of La Judie 4 km (2.5 mi) west of Rochechouart, France. Its original diameter before erosion is thought to have been about 20–30 km (12–19 mi). Its most recent age estimate is 202.7 ± 2.2 million years ago,^[3][4] placing it in the Rhaetian, close to the Triassic-Jurassic boundary.^[5] Since then the crater has been deeply eroded, and no trace of its original surface morphology is visible. The crater appears to be too small to account for the Triassic–Jurassic extinction event.^[5]

• http://en.wikipedia.org/wiki/Rochechouart crater