(A) Tremadocian Fauna.
A single species of atrematous brachiopod was collected by W. N. Benson at the Morning Star Mine, Te Oneroa, Preservation Inlet, and described by Chapman (1934) as Leptobolus novaezelandiae. It is associated with the graptolites Adelograptus victoriae (T. S. Hall), Tetragraptus decipiens T. S. Hall, Didymograptus taylori T. S. Hall and Triograptus otagoensis Benson and Keble, forms indicating the zone of Adelograptus (Middle Lancefieldian) which, according to Bulman* “may provisionally be considered of late Tremadoc age.”
[Footnote] * Bulman, 1941, Ann. Mag. Nat. Hist., ser. 11, vol. vii, p. 119.