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Age
Cladophlebis roylei is known from the Raniganj Group of the Damuda Series of India and from beds “probably of Rhaetic age” in Queensland (Arber. 1905). Walkom (1917) recorded it in lower Mesozoic rocks in Queensland, and later (1922) described specimens in the Lower and Upper Bowen Series of that State.
Sphenopteris lobifolia is known from the Permo-Carboniferons of Australia (Arber, 1905) and from the Lower and Upper Bowen series of Queensland (Walkom, 1922)
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Noeggerathiopsis hislopii has been found in the Talchir Tillite of India, and from the Damuda Series. Arber has identified it from the “Lower Coal Measures” and Newcastle Series of Australia. He also records it from the Glossopteris flora of Tasmania, Cape Colony, Transvaal, Argentina, and “Triasso-Rhaetic? Tonquin? China.”
Equisetites is known from the Westphalian (upper Carb.) to the Jurassic and the family. Neuropteridae from the Lower Carboniferous to the Triassic (Seward, 1933).
The accompanying table shows the correlation of the various beds mentioned above with the type Permian of the U. S.S. R. The initials of the species found in the New Zealand flora are placed beside the beds containing them.
Judged by their known range in other parts of the world the New Zealand plant fossils are probably Sakmarian to lower Tartarian in age.