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.
Brachiopods, phylum Brachiopoda, are marine animals that have hard valves (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs.Brachiopod valves are hinged at the rear end, while the front can be opened for feeding or closed for protection.odern brachiopods range from 1 to 100 millimetres (0.039 to 3.937 in) long, and most species are about 10 to 30 millimetres (0.39 to 1.18 in). The largest brachiopods known â Gigantoproductus and Titanaria, reaching 30 to 38 centimetres (12 to 15 in) in width â occurred in the upper part of the Lower Carboniferous.