Spiraculata
Encyclopedia
Spiraculata
Spiraculata
Spiraculata is an order of Blastoids containing at least one genus. These blastoids are characterized by indirect entrance to the hydrospires through canals by way of pores....

 is an order of Blastoid
Blastoid
Blastoids are an extinct type of stemmed echinoderm. Often called sea buds, blastoid fossils look like small hickory nuts. They originated, along with many other echinoderm classes, in the Ordovician period and reached their greatest diversity in the Mississippian subperiod of the Carboniferous...

s containing at least one genus. These blastoids are characterized by indirect entrance to the hydrospires through canals by way of pores.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK