-Acratia longituda McGill, with 8 genera and 0 species (including newspecies) belonging to 9 families.
-Acratia longituda McGill, with 8 genera and 0 species (including newspecies) belonging to 9 families.
这一介形类化石群含有8属0种(其中 新种),隶属于9个科;
-Acratia longituda McGill, with 8 genera and 0 species (including newspecies) belonging to 9 families.
这一介形类化石群含有8属0种(其中 新种),隶属于9个科;