Fig. 1From: Whirling in the late Permian: ancestral Gyrinidae show early radiation of beetles before Permian-Triassic mass extinctionTunguskagyrus planus sp. nov., Habitus. a Photograph of the holotype 5381/32. b Details of head. c Mesoventrite and midcoxae. d Metacoxae and the base of abdomen. Scalebars = 1 mmBack to article page