Chenendopora fungiformis
Lamouroux 1821
Chenendopora fungiformis is a rare, funnel-shaped tetracladine sponge.
It is a peculiar sponge, because at a certain growth stage, a new funnel forms at a point on the older funnel margin, leading to characteristic habits. The two figures show an example from Höver.
The skeleton of Chenendopora fungiformis is composed of small, smooth or tuberculated tetraclones, united via zygomes. Picture taken from Schrammen (1910)