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.
There are two invertebrate subphyla: the Urochordata, or tunicates tunicate, marine animal of the phylum Chordata, which also includes the vertebrates. The adult form of most tunicates (also called urochordates) shows no resemblance to vertebrate animals, but such a resemblance is evident in the larva......hordata. (kordÄ`kÃ´rdÄ,âtÉ`â) , dae dÃ¤ phylum of animals having, a notochord or dorsal, stiffening rod as the chief internal skeletal support at some stage of. Their development most chordates (are vertebrates animals), with backbones but the phylum also includes some small marine. invertebrate animals