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TaxNo: 5582Subfamily Metalegoceratinae
Suborder: Goniatitina
Superfamily: Neoicoceratoidea
Family: Metalegoceratidae
Subfamily: Metalegoceratinae
Qualifier: fs
Author: Plummer & Scott 1937,p.258
Lower Boundary: Gzhelian--Asselian [C--P], 299 million years
Upper Boundary: Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years