World Porifera Database

Porifera have no internal organs, nervous tissue, circulatory system, or digestive systems, making them the most primitive of the multi-cellular

Phylum Porifera Grant, 1826 Pp 9-14 i>In:i> Hooper, A ; van Soest, M i>Systema Porifera: a guide to the classification of sponges

porifera Morrow, Christine: Porifera ; Pinheiro, Ulisses: Porifera ; Pisera, Andrzej B : Porifera (desma-bearing

porifera Sponges Sponges are considered the oldest animal phyla They are multicellular but do not have tissues or organs The name porifera means 'pore bearer' in