Original sentence: It has been represented as the ancestor of all bilaterian animals, however there are other Ediacaran bilateria, so this is unlikely.Rather, it may be a mollusk with a non mineralised univalve shell, although sceptics remain
Edited sentence: It has been represented as the ancestor of all bilaterian animals, however there are other Ediacaran bilateria so this is unlikely.Rather, it may be a mollusk with a non mineralised univalve shell