Image: Serratognathus diversus An
Serratognathus diversus An, 1981 from Guizhou, South China.
- Yong Yi Zhen
- © Australian Museum
Species of Serratognathus with an apparatus including three morphotypes, symmetrical Sa (D), asymmetrical Sb (B, G-H), and strongly asymmetrical Sc (C, E-F, I-O) elements bearing a prominent and laterally compressed cusp. Scale bars 100 µm unless otherwise indicated.
Early Ordovician (early Floian), about 476-478 Ma.
Zhen, Y. Y., Percival, I.G., Liu, J.B. & Zhang, Y.D., 2009: Conodont fauna and biostratigraphy of the Honghuayuan Formation (Early Ordovician) of Guizhou, South China. Alcheringa 33 (3), 257-295.