1) Animal order 2) Order testacea 3) Testacean rhizopods 
Testacea is an order of rhizopod, which consists of testate amoeboid organisms. ...
• (n. pl.) Invertebrate animals covered with shells, especially mollusks; shellfish.
Tes·ta'ce·a noun plural [ New Latin , from Latin testaceum a shelled anumal. See Testaceous .] (Zoology) Invertebrate animals covered with shells, especially mollusks; shellfish. 
Testacea refers to an invertebrate animal having a shell.
[n] - testacean rhizopods
Testacea Covered with a shell; a former order corresponding to the subclass Testacealobosia in the current classification.
order Testacea noun testacean rhizopods