Could someone respond to the following questions :
1. Did the Nematodes appear during the Cambrian explosion (about 540 to 560 Ma
2. If not, when did the Nematodes appear ?
3. Are the Nematodes real ceolomates, or are they pseudocoelomates ?
4. Do the Nematodes have a metameric organisation or not ?
4. Any references about these subjects ?
I am sorry if these questions are very basic. But I am not working about
Nematode at all.
Thank you in advance
Genethon / France
bernot at genethon.fr