The average date of the first 1-inch snow (1 inch or more) is December 2. The greatest depth of snow on the ground was 19 inches on February 8-10, 1982. The greatest 24-hour snowfall was 15 inches on January 1-2, 1999. Temperature and precipitation records go back to 1888 for Champaign-Urbana.
The name annelidia derives from annellus, which means little ring in Latin. The body of annelids is divided into segments that are separated by septa, and in many annelids, bristles called satae are attached to each segment.
Lesson Summary. Annelida is the phylum that contains the segmented worms. These worms all have segmented bodies that are bilateral and contain the same structures in each segment, with exceptions of the head and anus of the animal. Since these animals are fairly simple, there are few highly specialized digestive structures.