Original paper

The paleozoic seed Mitrospermum in American coal balls

Taylor, Thomas N.;Stewart, Wilson N.

Palaeontographica Abteilung B Band 115 Lieferung 1-3 (1964), p. 51 - 58

published: Dec 22, 1964

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Keywords

seeds, Palaeozoic • Mitrospermum • coal, balls • USA