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Subclass HEXASTEROPHORA Schulze, 1886

Diagnosis

Basiphytous, rhizophytous or lophophytous Hexactinellida in which microscleres are mainly or all astral, typically hexasters; amphidiscs occur rarely as variants of discohexactins; choanosomal skeletons may consist of entirely loose spicules, sometimes irregularly joined by synapticulae or silica cement at contact points, or of regularly fused hexactins forming a dictyonal framework; dictyonal nodes, where present, may be entirely simple or lychniscid (lantern nodes).

 

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)
29-Mar-2018 PORIFERA Grant, 1836 22-Mar-2018 MODIFIED Dr Kathryn Hall
29-Mar-2018 28-Feb-2012 MODIFIED
29-Mar-2018 15-Apr-2011 MODIFIED
12-Feb-2010 (import)