
1) Class 2) Subclass entomostraca
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https://www.crosswordclues.com/clue/entomostraca

Entomostraca is a historical subclass of crustaceans, no longer in technical use. It was originally considered one of the two major lineages of crustaceans (the other being the class Malacostraca), combining all other classes – Branchiopoda, Cephalocarida, Ostracoda and Maxillopoda. The Ostracoda have the body enclosed in a bivalve shell-coverin...
Found on
http://en.wikipedia.org/wiki/Entomostraca

• (n. pl.) One of the subclasses of Crustacea, including a large number of species, many of them minute. The group embraces several orders; as the Phyllopoda, Ostracoda, Copepoda, and Pectostraca. See Copepoda, Phyllopoda, and Cladocera.
Found on
http://thinkexist.com/dictionary/meaning/entomostraca/

<zoology> One of the subclasses of Crustacea, including a large number of species, many of them minute. The group embraces several orders; as the Phyllopoda, Ostracoda, Copepoda, and Pectostraca. See Copepoda, Phyllopoda, and Cladocera. ... Origin: NL, fr. Gr. Cut in pieces + burnt clay, the hard shell of Testacea. ... Source: Websters Dictio...
Found on
http://www.encyclo.co.uk/local/20973
En`to·mos'tra·ca noun plural [ New Latin , from Greek ... cut in pieces + ... burnt clay, the hard shell of Testacea.]
(Zoology) One of the subclasses of Crustacea, including a large number of species, many of them minute. The group embraces several orders; as the Phyllopoda, Ostracoda, Cop...
Found on
http://www.encyclo.co.uk/webster/E/49

The entomostraca are a sub-class of the Crustacea, which includes all the lower and simpler forms. The number of segments and appendages varies very much in the different orders, and the gizzard of the higher forms is not represented. The larva is of the simple type known as the nauplius.
Found on
http://www.probertencyclopaedia.com/browse/BE.HTM

[
n] - in some older classifications includes the Branchiopoda and Copepoda and Ostracoda and Cirripedia
Found on
http://www.webdictionary.co.uk/definition.php?query=Entomostraca
subclass Entomostraca noun in some older classifications includes the Branchiopoda and Copepoda and Ostracoda and Cirripedia; no longer in technical use
Found on
https://www.encyclo.co.uk/local/20974
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