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TaxNo: 3706Pseudotirolites obliquum
Suborder: Paraceltitina
Superfamily: Xenodiscoidea
Family: Pseudotirolitidae
Genus: Pseudotirolites
Species: obliquum
Qualifier: ss
Author: Zhao et al. 1978,p.133
Lower Boundary: Pseudosteph./Tap.--Pseudotir./Pleuron., 252.5 million years
Upper Boundary: Pseudotir./Pleuron.--Rotodiscoceras beds, 252 million years