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TaxNo: 5926Subfamily Miklukhoceratinae
Suborder: Prolecanitina
Superfamily: Medlicottioidea
Family: Medlicottiidae
Subfamily: Miklukhoceratinae
Qualifier: fy
Author: Leonova 1989,p.95
Valid: Propinacoceratinae Plummer & Scott,1937 [TAX5925]
Lower Boundary: UTX Clyde Fm. base, 290 million years
Upper Boundary: RIT Amarassi beds top, 258 million years