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Asthenophyllum
Taxonomy
Asthenophyllum was named by Grubbs (1939) [Sepkoski's age data: S Ldov-u S Wenl]. It is not extant.
It was assigned to Metriophyllidae by Hill (1956); to Streptelasmatinae by Hill (1981); and to Rugosa by Sepkoski (2002).
It was assigned to Metriophyllidae by Hill (1956); to Streptelasmatinae by Hill (1981); and to Rugosa by Sepkoski (2002).
Species lacking formal opinion data