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1 Apr 04 (15909 words) |
 | Neither the membership nor the internal relationships of the Caenogastropoda, the largest and most diverse group of living gastropods, have been convincingly demonstrated. |
| This may be due to the group’s great variety of habitat and morphology, the rapidity of its radiation at least among the Hypsogastropoda or a prevalence of honplasous convergence. |
| Among the major results were (1) Although "Architeanioglossa" and "Neotaenioglossa" were not monophyletic, these and Campanilidae were generally included in a recognisable, monophyletic group of non-hypsogastropods. |
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