Archaeocyatha
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Archaeocyatha is a taxon of extinct, sessile, reef-building marine sponges that lived in warm tropical and subtropical waters during the Cambrian Period. It is thought that the centre of the Archaeocy
Archaeocyatha
Metaldetes taylori, Cambrian of Australia
Branching form archaeocyath from Rowland's Reef in Nevada
Archaeocyath, in situ at the Flinders Ranges.
Demosponge
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Demosponges or common sponges are sponges of the class Demospongiae, the most diverse group in the phylum Porifera which include greater than 90% of all extant sponges with nearly 8,800 species worldw
Archaeocyatha
…webberi, disappearing just prior to the end of the Cambrian period. Their rapid decline and disappearance coincided with a rapid diversification of the Demosponges. As for the earliest archaeocyathan, the Ediacaran sponge Arimasia from the Nama Group may be within the clade and specifically allied with Monocyathea…
Sponges in Caribbean Sea, Cayman Islands
The carnivorous ping-pong tree sponge, Chondrocladia lampadiglobus
Monanchora arbuscula (Poecilosclerida)
Geodia barretti (Tetractinellida)