CLASSIFICATION OF PHERONEMA
PHYLUM :- PORIFERA (Pore bearing, cellular grade, asymmetrical or radially symmetrical.)
CLASS :- HEXACTINELLIDA (Glass sponges with siliceous spicules of triaxon or six-pointed type.)
ORDER :- AMPHIDISCOPHORA (Hexaster spicules absent and amphidisks present.)
GENUS :- Pheronema
GEOGRAPHICAL DISTRIBUTION
It is found in u.K., U.S.A., and Europe.
HABIT AND HABITAT
Pheronema is found on the bottom of sea. It is the commonest hexactinellid amphidiscophore adapted for deep-sea life
GENERAL CHARACTERSTICS OF PHERONEMA
- Animal has a thick-walled cup or bowl-shaped body with the spongocoel opening above and with spicules in the form of tufts.
- Pleural tufts and long-twisted root tufts are present resembling glass wool.
- Projecting marginal and pleural prostals possess long monactines with small spines at one end, called as scepters.
- Spongocoel opens through the osculum which is encircled by upright spicules or marginal prostals.
- The animal in attached to the rocks by root spicules.
IDENTIFICATION
- The animal contains spicular tufts such as marginal prostals and pleural prostals, hence it is Pheronema.
References
- http://www.marinespecies.org/aphia.php?p=taxdetails&id=134378
- https://www.researchgate.net/figure/Pheronema-raphanus-WAMZ98331-external-morphology-scale-60-mm_fig2_335566827
- http://luirig.altervista.org/pics/index4.php?search=Pheronema+carpenteri&page=1
- https://www.amazon.in/Practical-Zoology-Invertebrate-S-Lal/
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