What type of coelom do they possess?
pseudocoelomate
What type of digestive system do they have?
alimentary canal
What level of organization do these organisms demonstrate?
organ-system level
How many tissue layers do these organisms have?
Triploblastic
What does the word "rotifer" mean?
wheel bearer
What two characteristics do these animals have?
have jaws and a crown of cilia
When are they first found in the evolutionary history?
early Eocene
What habitat are they found in?
Freshwater
What phylum is it in?
Rotifera
Front image: