Ammonites are a group of the extinct invertebrates belonging to the class of squids that lived in the Devonian. In Ammonite shell, it is heteromorphic and monomorphic. Most of the Ammonites belong to the nekton group, i.e. they move freely at the bottom of the water. They were extinct with the dinosaurs in the era of babaloyn. 

Sponges are common multicellular marine and freshwater animals. Sponges are one of the simplest animals. They appeared about 570 million years ago during the Cambrian epoch. About 5000 species of sponges are known. Most sponges live in warm ocean waters. As a rule, their bodies are covered with tubular and with many holes and mouths. Through these holes water enters the body of the sponge.   

Corals are ocean organisms that live in a group. There are two types of corals: soft corals and hard corals. They are very flexible and float in ocean waters. Coral polyps consist of thousands of small soft bodies called polyps. The shape of the polyps is cylindrical, with whiskers forming around the mouth. Coral polyps begin to stick to rocks in the sea bottoms and multiply.  

Belemnites are a group of extinct invertebrates belonging to the class of squids. From the Carboniferous period to the Paleogene, it existed in the sea. The belemnites found in the excavation had 5 pairs with curved legs, a large source adapted for swimming in water, convulsions, specific secretions that represent a protective function, from a soft body consisting of 3 parted shells (phragmocon, prostracum and rostrum).

Sea Lily (sea Lily) resembles a flowering plant, but it is not a plant, an insect feed with on organic substances. Sea lily can spank along, roll, creep, even some species can swim freely, but they usually live in combination with sponges or corals. It has a stem, bowl, hands, moving feet, roots. Sea lily is divided into stem and stemless. The length of the stem of some sea lily reaches 30 meters. They are also called hairy stars.

Sea hedgehog inhabits at the bottom the sea and near to it. They have rounded body shapes. The body is covered with long-sized spines. Their colors can be brown, black, purple, green, white, or red. Sea hedgehogs feed on algae and other organic substances. In the upper part of the body of sea hedgehogs there are eyes of a simple structure.

Brachiopods (lat. Brachiopoda, Greek. Brachion-hand, shoulder, Greek. Rodos-leg) - a class of marine insects of the capture type; bivalve-symmetrical insects that live on the bottom of water bodies. The bodies are located between two shells called the dorsal and hepatic. There are more than 280 modern species and about 10 thousand ectinct species. Brachiopods live from the Cambrian period until now, especially in the Paleozoic Era.

Shark tooth In the era of the Paleogene sharks was dominated. The largest shark-octopus of that period lasted up to 10 meters. Sharks are made up of the oldest groups of cartilaginous fish, formed 300 million years ago on earth, meaning their frames are strong, curved, and lightweight cartilage. More than 300 million years ago, during the Silurian epoch, sharks appeared, which arose very early and were destroyed. The shark's teeth were in different shapes.