49743
They generally possess compound eyes and a carapace , which may be a shell of two valves enclosing the trunk ( as in most Cladocera ) , broad and shallow ( as in the Notostraca ) , or entirely absent ( as in the Anostraca ) .
 Notostraca
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Notostraca