Suborder:
|
Prolecanitina
|
Superfamily:
|
Medlicottioidea
|
Family:
|
Medlicottiidae
|
Subfamily:
|
Propinacoceratinae |
Qualifier:
|
fs |
Author:
|
Plummer & Scott 1937,p.89
|
Lower Boundary:
|
U Virgilian--Asselian [C--P], 299 million years
|
Upper Boundary:
|
Wuchiapingian--Changhsingian [DZH--CHX], 253.8 million years
|