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TaxNo: 1277Crassotornoceras annissi
Suborder: Tornoceratina
Superfamily: Tornoceratoidea
Family: Tornoceratidae
Subfamily: Tornoceratinae
Genus: Crassotornoceras
Species: annissi
Qualifier: ss
Author: House & Price 1985,p.168
Lower Boundary: UD1K--UD1L:varicos.--C.holzapfeli [05,35, 375.1 million years
Upper Boundary: UD1L--UD2A:(frechi Zone base) [06,10], 374.5 million years