Figure 6. Permo-Triassic eutherapsid bone histology. A in Do extraordinarily high growth rates in Permo-Triassic dicynodonts (Therapsida, Anomodontia) explain their success before and after the end-Permian extinction?

Figure 6. Permo-Triassic eutherapsid bone histology. A, subadult gorgonopsian Scylacops femur SAM-PK-10188; B, adult therocephalian Pristerognathus femur SAM-PK-11557; C, late subadult nonmammalian cynodont Cynognathus femur SAM-PK-K6235a; D, early subadult nonmammalian cynodont Diademodon ulna SAM-PK-K8971c. Enlarged channels are absent from these taxa. Arrows indicate growth rings. Scale bars: B, D = 500 mm; A, C = 413 mm.