Family Laingiidae
|
Order |
: |
|||
Class |
: |
Hydrozoa |
||
No. of Genera in Ref. |
: |
3 |
||
No. of Species in Ref. |
: |
4 |
||
Environment |
: |
Fresh : No |
Brackish : No |
Marine : Yes |
||
Aquarium |
: |
|||
First Fossil Record |
: |
|||
Remark |
: |
Laingiomedusae with umbrella divided by peronial grooves of similar structures so that umbrellar margin is lobed; four radial canals; no typical circular canal but a solid core of endodermal cells around umbrella margin; tentacles solid, inserted on the exumbrellae surface above bell margin; alternating with the tentacles there may be narrow exumbrellar cnidocysts bands or triangular ciliated fileds; manubrium simple, quadrangular, tubular or conical; mouth opening quadrangular to circular; Gonads in four masses on the manubrium or as epidermal lining of interradial pockets of the manubrium; marginal sense organs apparently missing. Cnidome include macrobasic mastigophores or macrobasic euryteles (Ref. 3134). |
||
Etymology |
: |
|||
Division |
: |
|||
Reproductive guild |
: |
|||
Typical activity level |
: |
|||
Main Ref. |
: |
|||
Coordinator |
: |