Use the links to navigate the hierarchy of invertebrate classification.
Subclass Heteroscleromorpha
Order Tetractinellida
Suborder Astrophorina Suborder Spirophorina Suborder Thoosina
The Order Tetractinellida is not recorded from fresh waters. This taxon has not been reported from North America.
(These statements were generated automatically from the WInvertebrates database.)
