I. G. Speden

Fossiliferous Quaternary marine deposits in the McMurdo Sound Region, Antarctica

I. G. Speden · New Zealand Journal of Geology and Geophysics · 1962 · 92 citations

Lithological and paleontological content of the Carboniferous‐Jurassic Canterbury Suite, South Island, New Zealand

Peter B. Andrews, I. G. Speden, J. D. Bradshaw · New Zealand Journal of Geology and Geophysics · 1976 · 85 citations

Fossil localities in Torlesse rocks of the North Island, New Zealand

I. G. Speden · Journal of the Royal Society of New Zealand · 1976 · 65 citations

Torlesse Rocks, Palaeo-environmental Reconstruction, Paleoenvironmental Reconstruction +11

Lower Tertiary Microfossils from McMurdo Sound, Antarctica

Lucy M. Cranwell, H. J. Harrington, I. G. Speden · Nature · 1960 · 61 citations

Marine Geology, Engineering, Cold Seeps +3

Definition, age, and correlation of the Clarence series stages in New Zealand (late early to early late Cretaceous)

James S. Crampton, A. J. Tulloch, Graeme J. Wilson et al. · New Zealand Journal of Geology and Geophysics · 2004 · 30 citations