The Annelids, which means “little rings” in Latin, is commonly referred as segmented worms. Even though the fossil record for this phylum is unclear, but few forms existed already during the Cambrian period. Today, you can find these worms almost everywhere from the deepest sea floor to the soils in our backyards. There are over 15,000 of discovered species in the Annelid family. Scientists divided the segmented worms into three major groups:
Polychaeta: marine worms that are mostly found in wet and freshwater areas.
Oligochaeta: common earthworms and terrestrial worms;
Hirudinea: includes the parasitic blood sucking leeches.
1 comment:
Good luck with your blog from our new service adblogz.blogspot.com. It's the top place for advertisers to reach blogworld and for bloggers to save real money when you're blog shopping. Try it today and see for yourself.
Post a Comment