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TaxNo: 4291Svetlanoceras irwinense
Suborder: Goniatitina
Superfamily: Neoicoceratoidea
Family: Paragastrioceratidae
Subfamily: Paragastrioceratinae
Genus: Svetlanoceras
Species: irwinense
Qualifier: ss
Author: Teichert & Glenister 1952,p.21
Lower Boundary: Asselian--Sakmarian [ASS--SAK], 294.6 million years
Upper Boundary: Sakmarian--Artinskian [SAK--ART], 284.4 million years