What used to be the Archaeopteryx Haarlem specimen, now the holotype of Ostromia crassipes. The only known anchiornithid outside of China. A very fragmentary skeleton. But the bones that are present are very well preserved. There are even impressions of the wing feathers.
On display in the Teyler’s Museum in Haarlem, Netherlands. Specimen number TM 6926 and 6928
Found in the Painten formation, Germany.