|
Suborder:
|
Paraceltitina
|
|
Superfamily:
|
Xenodiscoidea
|
|
Family:
|
Tapashanitidae |
|
Qualifier:
|
fa |
|
Author:
|
Zhao et al. 1978,p.112
|
|
Lower Boundary:
|
Paratirol./Shevyrev.--Pseudosteph./Tap., 253 million years
|
|
Upper Boundary:
|
Pseudosteph./Tap.--Pseudotir./Pleuron., 252.5 million years
|