Image: Erraticodon bellevuensis Zhen and Percival
Erraticodon bellevuensis Zhen and Percival, 2004 from central New South Wales, Australia. M (H-K), Sa (L-N), Sb (O-R), Sc (S-T), Sd (U-V), Pa (A-D), and Pb (E-G) elements. Scale bars 100 µm.
- Yong Yi Zhen
- © Australian Museum
A species of Erraticodon with an apparatus, including seven morphotypes (M, Sa, Sb, Sc, Sd, Pa, and Pb elements); all elements with a prominent cusp and processes bearing discrete, peg-like denticles; Pb element characterized by having a prominent denticulate anterior process; Pa lacks an anterior process but displays a long anticusp-like basal tongue.
Middle Ordovician (Darriwilian), about 461-468 Ma.
Zhen, Y.Y. & Percival, I.G., 2004: Middle Ordovician (Darriwilian) conodonts from allochthonous limestones in the Oakdale Formation of central New South Wales, Australia. Alcheringa, 28, 77-111.