Suborder:
|
Prolecanitina
|
Superfamily:
|
Medlicottioidea
|
Family:
|
Medlicottiidae
|
Subfamily:
|
Propinacoceratinae
|
Genus:
|
Propinacoceras
|
Species:
|
galilaei aff. |
Qualifier:
|
af |
Author:
|
Hayasaka 1963,p.594
|
Lower Boundary:
|
Sakmarian--Artinskian [SAK--ART], 284.4 million years
|
Upper Boundary:
|
Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years
|