http://en.wikipedia.org/wiki/Heterotrich
Traditionally the heterotrichs have been treated as a subgroup of spirotrichs, but more recent work has found that they are not closely related to the other groups placed there, and accordingly they tend to be given their own class. Most belong to the order Heterotrichida; the position of the other orders is not clear, and Lynn has suggested that they do not really belong here, tentatively returning some to the Spirotrichea and treating others as a new class (Armophorea).
Traditionally the heterotrichs have been treated as a subgroup of spirotrichs, but more recent work has found that they are not closely related to the other groups placed there, and accordingly they tend to be given their own class. Most belong to the order Heterotrichida; the position of the other orders is not clear, and Lynn has suggested that they do not really belong here, tentatively returning some to the Spirotrichea and treating others as a new class (Armophorea).
No comments:
Post a Comment