This book includes 14 chapters. The first chapter discusses the requirements of fossilization and modes of preservation. Chapter two is concerned with the classification and nomenclature of living organisms. The third and fourth chapters deal with the morphology and classification of phyla porifera and cnidaria. Chapters five and six deal with the morphology and taxonomy of phylum annelida and class trilobita. Chapters seven, eight and nine deal with morphology, classification and modes of life of phylum mollusca. Chapter ten discuses morphology, taxonomy and modes of life of phylum brachiopoda. Chapter eleven deals with the zoarial morphology and ecology of phylum bryozoa. Chapter twelve discuses morphology and modes of life of phylum echinodermata, while chapters thirteen and fourteen deal with morphology and taxonomy of class graptolithina and trace fossils.