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The type material of Tetracyclus japonicus (Petit) Temp. & H. Perag. and Tetracyclus eckhardii Ehrenb. (Bacillariophyceae)

David M. WILLIAMS

en Cryptogamie, Algologie 24 (4) - Pages 333-340

Published on 28 November 2003

This paper illustrates type material for both Tetracyclus japonicus (Petit) Temp. et Perag. (=Stylobiblium japonicum Petit) (Sendai, Japan, Fossil, possibly Miocene) and Tetracyclus eckhardii Ehrenberg (Ostheim, Germany, Fossil, age unknown). While it remains possible to confuse the two species, the latter (Tetracyclus eckhardii) has not been recorded since Ehrenberg’s description in 1848.


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WILLIAMS D. M. 2003. — The type material of Tetracyclus japonicus (Petit) Temp. & H. Perag. and Tetracyclus eckhardii Ehrenb. (Bacillariophyceae). Cryptogamie, Algologie 2003 (4): 333-340.