Poriferans, like the demosponge Amphimedon queenslandica, are the earliest diverging metazoans and may hold the key to understanding the evolution of metazoan pathways. A. queenslandica exhibits a bip
Halisarca dujardini (Chondrillida) is a marine demosponge very distantly related to Amphimedon queenslandica (Haplosclerida). Halisarca embryonic development, metamorphosis and regeneration are well d
Sponges (Porifera) are among the earliest evolving metazoans. Their filter-feeding body plan based on choanocyte chambers organized into a complex aquiferous system is so unique among metazoans that i
