Fig. 2 in Osteohistology of hyperodapedontine rhynchosaurs from the Upper Triassic of Southern Brazil

Fig. 2. Transverse section of hyperodapedontine rhynchosaurs Hyperodapedon sp. from Santa Maria Supersequence, Santa Maria 2 Sequence, Rio Grande do Sul, Brazil, Upper Triassic. A. UFRGS-PV-0247-T, tibia showing the fibrolamellar bone tissue in the perimedullary region (A 1); humerus showing the fibrolamellar bone tissue with primary osteons (big arrows) (A 2). B. UFRGS-PV-1217-T, radius showing uninterrupted fibrolamellar bone tissue with longitudinal oriented vascular canals (arrow). C. UFRGS-PV-0293-T, tibia showing a poorly defined fibrolamellar bone tissue in the perimedullary region (big arrow) and a parallel-fibred bone tissue (arrow) towards the periphery. D. MMACR-PV-018, humerus with resorption cavities (RC) in the perimedullary region and a growth mark (big arrow) in the mid-cortex. E. UFRGS-PV-408-T, humerus showing the lamellar-zonal bone tissue with growth marks (arrows). Scale bars 1 mm.