Collection of Fossils: Ammonites, Dinosaur Eggs, Trilobites and more

The term fossil describes a wide range of natural artifacts. Generally speaking, a fossil is any evidence of past plant or animal life that is preserved in the material of the Earth’s crust. When most people speak of fossils they mean a specific subsection of this group – fossils in which the shape of the animal or plant has been preserved while the actual organic matter of its body is gone. These amaz-ing remnants, which date to prehistoric times, were formed extremely slowly in dynamic geological processes.

The following are some of the fossils we have in our collection.

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FOSSILS

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BELEMNITES iTEm no. 30544

Belemnites are a member of an extinct group of cephalopods, animals relat-ed to the modern squid and octopus but possessing a large internal shell. They first appeared about 345 Million years ago, Mississippian Period, and became extinct during the Eocene Epoch, which ended about 38 Mil-lion years ago. The internal shell was straight in most species but was loosely coiled in some. The shell was complex in structure and served for support and muscle attachment and as a hydro-static device enabling the animal to compensate for depth and its own body weight.

Sharks first appeared in the Devonian Period 400 million years ago. This shark tooth belonged to the Megalodon, an extinct species of shark that lived approximately 15.9 to 2.6 million years ago, during the Cenozoic Era. These great sharks were believed to have grown as long as 40 feet.

SHARK TOOTH iTEm no. 42391

Ammonites are an extinct cephalopod related to the nautilus. Their shells are typically coiled in a flat spiral. Its name comes from the Greek meaning ‘resemblance to a ram’s horn.’ The smooth polished specimens are found in Morocco and are from the Silurian to Cretaceous periods, approximately 450 million years ago. The rougher variety is a limestone ammonite found in Great Britain from the Jurassic pe-riod, 170 million years ago.

AMMONITES iTEm no. 41765

The sand dollars are one of the most unusual of all marine life and they are about 12 million years old. They are re-lated to sea urchins and star fish. Sand dollars are prominent in various religious folklores. For example, in Christianity, the five slits on the edge of the shell is said to represent the five wounds on the body of Christ. There is an Easter lily design in the center of the top with a five pointed star in its center, star of Bethlehem. On the back is an outline of the poinsettia, the Christmas flower.

SAND DOLLARS iTEm no. 30543

Stegosaurus dinosaur egg from the Henan Provenance, China, from the Cretaceous Period, 65 Million years ago.

Stegosaurus was a herbivorous “bird-hipped” dinosaur they were widely distributed from the United States to China. They laid clutches of relatively small eggs in shallow holes scraped in the ground. They may have been cov-ered with sand and left to hatch in the warmth of the sun.

DINOSAUR EGG iTEm no. 46112

River, lake, and swamp deposits that date from the Pennsylvanian period. Ferns are one of the most ancient plant groups surviving today. They first appear in the fossil record in the Carboniferous Period, over 300 million years ago. Ferns are now confined to fairly wet areas but once dominated the Earth’s forests. Some of these deposits can be found in St. Clair, Pennsylvania.

STONE FERN iTEm no. 35890

Trilobites belonged to a group of ex-tinct marine arthropods. They first arose in the Cambrian Period (545 to 490 million years ago), and died out at the end of the Permian Period (about 251 million years ago), probably as a result of a lowering of the level of the sea.

The trilobite body is highly segmented, and was divided into a head, a thorax, and a tail. They had gills on their many pairs of limbs, and compound eyes like insects.

TRILOBITES iTEm no. 617

Fossil fish in stone, with a well preserved skeleton. This fossil is dated to about 10 Million Years Old, making it from the Eocene Period. This particular speci-men was found in Wyoming.

FOSSILIZED FISH iTEm no. 46248

Group of 5 Fossils: 2 polished Ammo-nites, 150-500 Million Years Old; 2 Trilo-bites, one in stone. Upper, Ordovician Period, Morocco, 450 Million Years Old; Texagryphaea Mucronata, 125 Million Years Old.

VARIOUS FOSSILS iTEm no. 43184

Group of 8 Fossils: Attached to a board with a timeline for easy identification: Trilobite, Algae, Crinoid Stems, Brachiopod, Pelecypod, Protozoan, Gastropod and Oyster. 10 Million - 500 Million Years Old.

VARIOUS FOSSILS iTEm no. 32214

Fossils are available for sale online or over the phone. Visit our website www.sadighgallery.com or call our Toll Free Number 1(800)426-2007 to order.

All our items are guaranteed authentic and come with a Lifetime Certificate of Authenticity!

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