20 
Records of the Australian Museum (2009) Vol. 61 
Fig. 12. Serratognathus diversus An, 1981. All from the Honghuayuan Formation in Guizhou. A-C, Sa element; (A), AM F.135048, 
THH7, anterobasal view (IY119-004); (B), AM F. 135044, THH7, lateral view (IY119-002); (C), AM F. 135047, THH10, posterior view 
(IY119-040). ( D ), Sb element, AM F. 135049, THH7, outer lateral view (IY119014); E-H, broken specimens showing overlapping 
laminar layers on the surface of breakage. E,F, Sb element, AM F.135815, THH7, (E), postro-lateral view (IY133-035), (F), upper view 
(IY133-037); G,H, Sc element, AM F. 135816, THH9, (G), inner lateral view (IY133-040), (//), close up showing the surface of breakage 
(IY133-041); (7), Sc element, AM F. 135817, YTH10, showing the partition between laminar layers and the fine laminar structure within 
each laminar layer (IY133-033). Scale bars 100 pm unless otherwise indicated. 
[Fig. 13 caption continued]... G,H, Sb element, AM F. 135823, WHC36, (G), antero-outer lateral view, bearing 10 laminar layers 
(IY133-013), ( H ), close up showing denticles along anterior margin of each laminar layer (IY133-014). I,J, Sc element, AM F. 135824, 
WHC36, (/), antero-outer lateral view, bearing 17 laminar layers (IY133-006), (7), posterior view (IY134-001). K, L, Sc element, AM 
F. 135825, THH12, ( K ), anterior view, bearing 20 laminar layers (IY133-044), (L), posterior view (IY134-029). (AO, Sc element, AM 
F. 135826, WHC35, close up showing the small ring-like node representing the initial stage of the element (IY134-014). (O), Sc element, 
AM F. 135817 (same specimen as Fig. 121), YTH10, close up showing the rounded pit-like initial stage of the element (IY133-028). Scale 
bars 100 pm, unless indicated otherwise. 
