Australian Biological Resources Study

Australian Faunal Directory


Regional Maps

Genus Echinodictyum Ridley & Duncan, 1881



New South Wales, Northern Territory, Queensland, South Australia, Tasmania, Victoria, Western Australia

Extra Distribution Information

West Indian region, Red Sea, Indian Ocean, Indo-Malayan region, W and central Pacific Ocean.

IBRA and IMCRA regions (map not available)


Timor Transition (1), Timor Province (2), Cape Province (20), Northern Shelf Province (25), Northwest Shelf Transition (26), Northwest Shelf Province (27), Central Western Shelf Transition (28), Central Western Shelf Province (29), Northwest Transition (3), Southwest Shelf Province (31), Great Australian Bight Shelf Transition (32), Spencer Gulf Shelf Province (33), Western Bass Strait Shelf Transition (34), Bass Strait Shelf Province (35), Southeast Shelf Transition (37), Central Eastern Shelf Transition (39), Northwest Province (4), Northeast Shelf Province (40), Northeast Shelf Transition (41), Central Western Transition (5)

Distribution References


Erect, vasiform, flabellate, ramose or massive growth forms. Surface typically rugose, with ridges, conules and other processes. Texture characteristically harsh, brittle and flexible, reflecting high ratio of silica to spongin in skeleton. Axial and extra-axial skeletons virtually undifferentiated. Choanosomal skeleton not compressed, irregularly reticulate. Spongin fibres usually massive, fully cored by oxeas, and echinated by acanthostyles. Extra-axial skeleton vestigial, consisting of individual subectosomal styles embedded in peripheral fibres, and projecting through ectosome or merely dispersed between fibres. Ectosomal skeleton usually membraneous, sometimes skin-like, typically without specialised spiculation (except in one species). Ectosomal region contains heavy deposits of type B spongin, frequently with dense deposits of pigment granules. Structural megascleres are oxeas of 1–2 sizes, together with acanthostyles, long or short subectosomal styles, and short slender ectosomal styles in one species. Microscleres absent.


ID Keys

See Family Raspailiidae Diagnosis.


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 15-Dec-2011 MOVED
29-Mar-2018 13-Apr-2011 MODIFIED
12-Feb-2010 (import)