Kingdom Animalia Phylum Porifera Order Haplosclerida | Class Demospongiae Rank Suborder | |
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Similar Haplosclerida, Niphatidae, Chalinidae, Agelasida, Petrosia | ||
Petrosina ogni menesta
Petrosina is the name of a suborder of marine haplosclerid sponges. It includes three families.
Contents
Taxonomy
The Petrosina were first established by Nicole Boury-Esnault and Monique Van Beveren in 1982. They are classified under the order Haplosclerida of the class Demospongiae.
Description
Members of Petrosina are characterized by isotropic skeletons. The spicules are almost always smooth oxeas or strongyles. There is no differentiation between primary and secondary spicule tracts or fibers, and the latter lack orientation.
All members of the suborder are presumed to be oviparous. They are also usually hard or incompressible in consistency. Spicule density is high with little to no spongin present.
Families
These families are classified under Petrosina:
References
Petrosina Wikipedia(Text) CC BY-SA