Locality: Areyonga Creek section, eastern Gardiner Range, about 5 km south of Areyonga (locality 5), Amadeous Range, Northern Territory State, Australia.

Horizon: Lower Stokes Formation, RSN sample 85-2020P, Stokes Siltstone, bed 6, about 20-30 m above the base of the formation.

Biostratigraphy: Phragmodus-Plectodina Conodont zone.

Age: Uppwer Darriwillian Stage, Upper Llanvirn Series, Middle Ordovician.

Assemblage 1:

CPC 33666:

Assemblage 3:

CPC 33664-33665:

Assemblage 4

Locality: Eastern end of Johnny’s Creek Anticline, north of King’s Canyon, (Locality 8), Amaedous Range, Northern Territory State,Austrlia.

Horizon: RSN sample 86-2029H, Carmichael Sandstone within the basal 20 m of the formation.

Biostratigraphy:

Age: Late Ordovician.

Material:

CPC 33572-33575: Scales.