Figure 3. Lithology and stratigraphic distributions of conodont species, and the conodont zonation in the Hatuke Creek section.
Subzone and the overlying Eoplacognathus suecicus Subzone) as subdivisions of the “A.” variabilis–“A.” antivariabilis Zone. Subsequently, the “Polonodus” tablepointensis Subzone was excluded from the “A.” variabilis–“A.” antivariabilis Zone
(An, 1987) or “A.” variabilis Zone (Ding et al., 1993) with Dzikodus tablepointensis becoming the index species for the conodont zone underlying the Eoplacognathus suecicus Zone (Zhang, 1998a). Zhang (1998a) defined the lower