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Symphyphyllum
Taxonomy
Symphyphyllum was named by Spasskiy (1968) [Sepkoski's age data: D Sieg Sepkoski's reference number: 1240]. It is not extant.
It was assigned to Kodonophyllidae by Hill (1981); and to Rugosa by Sepkoski (2002).
It was assigned to Kodonophyllidae by Hill (1981); and to Rugosa by Sepkoski (2002).