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The Clathrinida is a rich and variable tubular marine sponge with calcareous skeletons. The sponge is organized into simple tubes called the olynthus with an internal and external layer. Both layers are present in the early development stages of Clathrinida and the complex adult body still originates from the original olynthus [1].
Stromatoporoidea is an extinct clade of sea sponges common in the fossil record from the Middle Ordovician to the Late Devonian. [1] They can be characterized by their densely layered calcite skeletons lacking spicules.
Arturia is a genus of calcareous sponge in the family Clathrinidae which contains 14 species. [1] It is named after Arthur Dendy , a prominent researcher of calcareous sponges. [ 2 ] It was renamed Arturia in 2017 because the name Arthuria was already assigned to a genus of molluscs.
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It has been suggested that Homoscleromorpha are more closely related to eumetazoans than to the other sponge groups, rendering sponges paraphyletic. [7] This view has not been supported by later work using larger datasets and new techniques for phylogenetic inference, which tend to support sponges as monophyletic, with Homoscleromorpha grouping ...
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The Cladorhizidae family is characterized by its branched and bushy growth form, which can reach up to 3 meters (9.8 ft) in length. The body is composed of a skeleton made of spicules, which provide structural support and defense against predators.