Baerida

Baerida is an order of sea sponges in the subclass of Calcaronea.[1]

Baerida
Scientific classification
Kingdom: Animalia
Phylum: Porifera
Class: Calcarea
Subclass: Calcaronea
Order: Baerida
Borojevic, Boury-Esnault & Vacelet, 2000
Families

Species of the order Baerida are leuconoid calcareous sponges with the skeleton either composed exclusively of micro-diactines, or in which microdiactines constitute exclusively or predominantly a specific sector of the skeleton, such as choano-skeleton or atrial skeleton. Large or giant spicules are frequently present in the cortical skeleton, from which they can partially or fully invade the choanoderm. In sponges with a reinforced cortex, the inhalant pores can be restricted to a sieve-like ostia-bearing region. Dagger-shaped small tetractines (pugioles) are frequently the sole skeleton of the exhalant aquiferous system. Although the skeleton may be highly reinforced by the presence of dense layers of microdiactines in a specific region, an aspicular calcareous skeleton is not.

References.
  1. "WoRMS - World Register of Marine Species - Baerida". www.marinespecies.org. Retrieved 2019-03-17.
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