Taxon concept APHRAGMOPHORA last modified 2008-10-09 16:11:37.0
Order APHRAGMOPHORA Tokioka, 1965
Without ventral transverse muscle bands, coelom is entirely hollow and glandular structures are weakly developed on body surface.
Comprises four families: Sagittidae, Pterosagittidae, Bathybelidae and Pterokrohniidae.
History of changes
Note that this list may be incomplete for dates prior to September 2013.
|Published||As part of group||Action Date||Action Type||Compiler(s)|