Baeridais anorderofsea spongesin the subclass ofCalcaronea,first described in 2000 byRadovan Borojevic,Nicole Boury-EsnaultandJean Vacelet.[1][2]Baerida contains four families; two of these families (LepidoleuconidaeandPetrobionidae) were formerly placed within the orderLithonida.
| Baerida | |
|---|---|
Scientific classification
| |
| Domain: | Eukaryota |
| 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.[citation needed]
References.
edit- ^"WoRMS - World Register of Marine Species - Baerida".marinespecies.org.Retrieved2019-03-17.
- ^Borojevic, R.; Boury-Esnault, N.; Vacelet, J. (2000)."A revision of the supraspecific classification of the subclass Calcaronea (Porifera, class Calcarea)".Zoosystema.22(2): 203–263.
External links
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