Here is a plate from the Yixiang Formation with two aquatic mayfly larval stages of the species Ephemeropsis trisetulis. It seem that this Mayfly fossils are to too rare on the cetaceous Yixiang Formation. This piece shows already two specimens on one plate. The fossils it self are about 40 and 45 mm long.
|Huangbanjigou, Beipao city ,Liaoning province ,China|
|Size of Plate:||about 90 x 75 mm|
|Age:||Lower Cretaceous , Barremian - Aptian, Yixiang Formation|