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Article: A new non-calcified alga from the upper Silurian of mid Wales

Publication: Palaeontology
Volume: 20
Part: 4
Publication Date: January 1978
Page(s): 823 832
Author(s): Dianne Edwards
DOI:
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Abstract

The alga, Powysia bassettii gen. et sp. nov., is described from the early Ludlow Series at Llangammarch Wells, Powys, mid Wales. The most complete specimen consists of a thallus differentiated into holdfast, stipe, and much branched distal region, all of which appear to have a tubular construction. Reproductive structures have not been found. Comparison is made with living and fossil algae, but the precise affinities of these Welsh fossils, in which a thallus of such marked morphological differentiation has an apparently simple internal structure, remain unresolved.
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