CLASSIFICATION OF CLATHRINA OR OLYNTHUS
PHYLUM :- PORIFERA (Pore bearing, cellular grade, asymmetrical or radially symmetrical.)
CLASS :- CALCAREA (Calcareous spicules present.)
ORDER :- CLATHRINIDA (Canal system of ascon type. )
FAMILY :- CLATHRINIDAE
GENUS :- Clathrina
GEOGRAPHICAL DISTRIBUTION
Distributed from Matha’s vineyard to Gulf of St. Lawrence. From Casco bay to Arctic ocean and common in Europe.
HABIT AND HABITAT
Clathrina is a simple, marine sponge attached to rocks or substratum.

GENERAL CHARACTERSTICS OF CLATHRINA OR OLYNTHUS
- Originally it was presumed as adult and was called as Olynthus, but now it is known to represent the late developmental stage of some sponge.
- Sedentary sponge with a free end containing osculum.
- Spongocoel opens through the osculum.
- Body is cylindrical and perforated by various ostia.
- The skeleton contains spicules in the form of triactines and/or tetractines, sometimes with diactines, tripods and tetrapods as well.
- Development is complicated.
- The choanoderm is usually flat, never forming folds when the sponge is extended.

IDENTIFICATION
The animal has broad anterior, portion with osculum, ostia and narrow posterior portion attached to substratum and all above characters, hence it is Clathrina.


OUR POSTS
- Click to share on WhatsApp (Opens in new window)
- Click to share on Twitter (Opens in new window)
- Click to share on Facebook (Opens in new window)
- Click to share on LinkedIn (Opens in new window)
- Click to share on Pinterest (Opens in new window)
- Click to share on Telegram (Opens in new window)
- Click to print (Opens in new window)
- Click to share on Reddit (Opens in new window)
- Click to share on Tumblr (Opens in new window)
- Click to share on Pocket (Opens in new window)
- Click to share on Skype (Opens in new window)
Pingback: PHYLUM PORIFERA - FAUNAFONDNESS