Cooksonia sp. (Lang 1937)
Stalk with Sporangia. 3cm. Williamsville A, Bertie Group, Pridoli, upper Silurian. Ridgemount, On., Canada.
By Ludwigia
Stalk with Sporangia. 3cm. Williamsville A, Bertie Group, Pridoli, upper Silurian. Ridgemount, On., Canada.
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