Figure 1. Ianthodon schultzei holotype KUVP 133735 in New information on the cranial and postcranial anatomy of the early synapsid Ianthodon schultzei (Sphenacomorpha: Sphenacodontia), and its evolutionary significance

Figure 1. Ianthodon schultzei holotype KUVP 133735, combined slab, with outlines of skull bones (outlines by D. Scott, made prior to Kissel and Reisz, 2004, Fig. 2; now exposed as embedded counter slab) and a disarticulated skeleton of the diapsid reptile Petrolacosaurus kansensis (shaded areas); a – angular; ar – articular; c – vertebra centrum; cau – caudal neural arch; cle – cleithrum; co – anterior coracoid; cp – cultriform process of parasphenoid–basisphenoid complex; cr – cervical rib; d – dentary; dr – dorsal rib; h – humerus; n – nasal; na – presacral neural arch; pal – palatine; pc – posterior coronoid; pm – premaxilla; pra – prearticular; ps – parasphenoid–basisphenoid complex; pt – pterygoid; qj – quadratojugal; sa – surangular; sc – scapula; soc – supraoccipital; sp – splenial; v – vomer.