Pectostraca definitions

Pectostraca

• (n. pl.) A degenerate order of Crustacea, including the Rhizocephala and Cirripedia.
Found on http://thinkexist.com/dictionary/meaning/pectostraca/

---

Pectostraca

Pec·tos'tra·ca noun plural [ New Latin , from Greek ... fixed + ... shell of a testacean.] (Zoology) A degenerate order of Crustacea, including the Rhizocephala and Cirripedia.
Found on http://www.encyclo.co.uk/webster/P/39

---