Genus SPIRIFER
Kingdom / Phylum . . . . . . . . . Class / Subclass / Infraclass Division / Superorder / Order Suborder / Infraorder . . . . . . Superfamily / Family . . . . . . . Subfamily / Genus . . . . . . . . .	Animalia / Brachiopoda Rhynchonellata / n.a. / n.a. n.a. / n.a. / Spiriferida Spiriferidina / n.a. Spiriferoidea / Spiriferidae Spiriferinae / Spirifer
Age: Distribution:	Late Silurian - Permian Global
Depicted on: Mauritania, 1972 / 1974 (25 Fr. / overprinted 5 U.) Spain, 2015 (Tyrannosaurus sheet margin)   Meter franking, Geologisches Landesamt, Krefeld, German Federal Republic, 1976. Meter franking, Geologisches Landesamt, Krefeld, German Federal Republic, 1987 SHOW SCAN.