Systematic part, in Wasps (Insecta: Vespida = Hymenoptera) from the Purbeck and Wealden (Lower Cretaceous) of southern England and their biostratigraphical and palaeoenvironmental significance
A. P. Rasnitsyn, and
E. A. Jarzembowski
1998
Article
Cretaceous Research
19:329-391
Find it at: