Image: Erraticodon bellevuensis Zhen and Percival

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.
 

Photographer:
Yong Yi Zhen
Rights:
© Australian Museum

Notes

Diagnosis

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.

Age

Middle Ordovician (Darriwilian), about 461-468 Ma.

Distribution

Australia.

Reference

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.

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Tags conodonts, microfossils,