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Gaynaphyllum
Taxonomy
Gaynaphyllum was named by Pedder (1980) [Sepkoski's age data: D Eife-u]. It is not extant.
It was assigned to Ptenophyllidae by Zhen (1995); and to Rugosa by Sepkoski (2002).
It was assigned to Ptenophyllidae by Zhen (1995); and to Rugosa by Sepkoski (2002).
Species