Suborder:
|
Paraceltitina
|
Superfamily:
|
Xenodiscoidea
|
Family:
|
Pseudotirolitidae
|
Genus:
|
Pseudotirolites
|
Species:
|
changjianggouensis |
Qualifier:
|
sn |
Author:
|
Yang 1987,p.269
|
Lower Boundary:
|
AZB Dzhulfites beds base, 253 million years
|
Upper Boundary:
|
AZB Paratirolites--Pleuronodoceras beds, 251.5 million years
|