Figure 16 in A new Thai Mesozoic lungfish (Sarcopterygii, Dipnoi) with an insight into post-Palaeozoic dipnoan evolution

Figure 16. Schematic drawings and photographs showing three stages in the evolutionary trend of the 'hard snout' exemplified by Chirodipterus, Ferganoceratodus martini sp. nov. and Neoceratodus forsteri. The upper drawings show reconstructions of the structure in living fishes, the middle line drawings show the mineralized tissues as found in the fossil record and the lowest are photographs of actual specimens (Chirodipterus from Bemis & Northcutt, 1992: figure 24).