http://en.wikipedia.org/wiki/Peniculid
The peniculids were first defined by Fauré-Fremiet in 1956. Originally they were one of three suborders of the hymenostomes, which are now treated as subclasses of the Oligohymenophorea. They were divided into two suborders by Small and Lynn in 1985, who placed them in the class Nassophorea, owing to ultrastructural peculiarities such as the presence of nematodesmata, which was considered to indicate the cyrtos was secondarily absent. However, more recent schemes reverse this move.
The peniculids were first defined by Fauré-Fremiet in 1956. Originally they were one of three suborders of the hymenostomes, which are now treated as subclasses of the Oligohymenophorea. They were divided into two suborders by Small and Lynn in 1985, who placed them in the class Nassophorea, owing to ultrastructural peculiarities such as the presence of nematodesmata, which was considered to indicate the cyrtos was secondarily absent. However, more recent schemes reverse this move.
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