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TaxNo: 5181Genus Elephantoceras
Suborder: Tornoceratina
Superfamily: Pseudohaloritoidea
Family: Pseudohaloritidae
Subfamily: Shouchangoceratinae
Genus: Elephantoceras
Qualifier: ge
Author: Zhao & Zheng 1977,p.232
Lower Boundary: Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
Upper Boundary: Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years