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Mennessieria
Taxonomy
Mennessieria was named by Calzada (1987) [Sepkoski's age data: K u Sepkoski's reference number: 909].
It was assigned to Cassiopinae by Calzada (1987); and to Opisthobranchia by Sepkoski (2002).
It was assigned to Cassiopinae by Calzada (1987); and to Opisthobranchia by Sepkoski (2002).