Image: Prioniodus honghuayuanensis Zhen, 1
Prioniodus honghuayuanensis Zhen, 2005 from Guizhou, South China. M (A-D) and Sa (E-S) elements. Scale bars 100 µm.
- Yong Yi Zhen
- © Australian Museum
Species of Prioniodus with an apparatus, including seven morphotypes (M, Sa, Sb, Sc, Sd, Pa, and Pb elements); Pa and Pb elements with denticulate posterior and outer lateral process and adenticulate (or with rudimentary denticles) anterior process; all S elements with a proclined cusp, a long denticulate posterior process, and adenticulate (or rudimentarily denticulated) lateral and anterior processes.
Early Ordovician (early Floian), about 476-478 Ma.
Zhen, Y. Y., Liu, J.B. & Percival, I.G., 2005: Revision of two prioniodontid species (Conodonta) from the Early Ordovician Honghuayuan Formation of Guizhou, South China. Records of the Australian Museum 57, 303-320.