Lath seen from the back with brown coat oozing through. Lath and plaster is a building process used to finish mainly interior walls and ceilings in Canada and the United States until the late 1950s. After the 1950s, drywall began to replace the lath and plaster process in the United States.
Chapter 6: Phylum Brachiopoda. 6.1 Introduction. While recent brachiopods are a rather rare and insignificant group, their long fossil history shows that they were at times the most prominent animals in the seas.he phylum is quite important for biostratigraphy, paleoecology, and evolutionary studies because it shows a great variety of changes in form and function through time. Brachiopods appear near the beginning of the Cambrian, but did not become abundant until the Early Ordovician.
The Annelida and Arthropoda phyla share membership in the broader Animalia category, or kingdom, that includes all animals. From that similarity, however, they go in separate directions. Arthropods and annelids are different types of organisms.The Annelida phylum includes most worms, while the diverse Arthropoda phylum counts arachnids, lobsters and insects among its members.ne difference between Annelid and Arthropod phyla is their diversity. The Annelid phylum contains three classes of organisms: Polychaeta, Oligochaeta and Hirudinea. The first two classes consist of worms differentiated primarily by the use of parapodia for movement; the third includes leeches.