Trilobite proliferated and thrived throughout the Paleozoic world, comprising one of the earliest known groups of arthropods
Pelecypoda is the second largest among the mollusks and appears in the first fossil record in the early Cambrian (more than 500 million years ago).
Fossils of cephalopoda containing the famous animals such as ammonites and belemnites.Octopus, squid and nautilus are the most famous today's species
Brachiopods are one of the main groups of invertebrates.
Corals are colonial marine invertebrates. They include the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton.
Gastropods, or univalves, are the largest and most successful class of mollusks. Most of are marine, but many live in freshwater or on land
Echinoderms are the diverse phylum of marine animals, possess unique characteristics such as a skeleton of calcite plates, pentameral symmetry, and a distinctive water-vascular system.
A plant fossil is any preserved part of a plant that has long since died. Paleobotany dealing with the recovery and identification of plant remains from geologic contexts, and their use for the biological reconstruction of past environments
Trace fossils are geologic records of biologic activity. Those are fossils, but not of the living things themselves. Probably the best-known examples are dinosaur trackways.
Vertebrates are animals with backbones and they are also characterized by a muscular system and a central nervous system partly enclosed within the backbone.