This is a beautiful and interesting Chalcedony snail of the species Hippochrenes volgensis from the Paleocene of the Saratov region (Russia). In fact, all fossil snails from this site are often identified as this species.

Here is an inexpensive example of a fossil brachiopod that belongs to the species Horridonia horrida from the Upper Permian.

Here is a nice Inzeria intia stromatolite plate from the Bitter Springs Formation in Australia.
This stromatolite plate shows an extraordinary play of colors and comes from a particularly interesting locality.

Here is an insect inclusion containing a Cretaceous lacewing in Burmese amber. 

Here is a good long-arm lobster of the species Mecochirus longimanatus from the Solnhofen limestone of Eichstätt. On or above its carapace is a small fossil sponge of the genus Codites.

This is a polished section of an exotic and decorative rock known as Bumble Bee Jasper. It is a carbonate microbialite that was partially formed under the influence of extremophile microorganisms.

This is a polished section of an exotic and decorative rock known as Bumble Bee Jasper. It is a carbonate microbialite that was partially formed under the influence of extremophile microorganisms.

Here is a beautiful matrix piece of a fossil coral of the species Montlivaltia obconica from the Jura of Nattheim.

This detailed fossil Bivalve from the Jurassic of Portugal belongs to the species Myophorella (Clavotrigonia) lusitanica. This species is also still often identified as Trigonia lusitanica.

This double-valved fossilized shell from the Jurassic period of Portugal belongs to the species Myophorella (Clavotrigonia) lusitanica.
This species is also often referred to as Trigonia lusitanica.

This fossilized bivalve shell from the Jurassic period of Portugal belongs to the species Myophorella (Clavotrigonia) lusitanica. It is often referred to by its alternate name, Trigonia lusitanica.

This is a large and interesting plate with numerous Ediacara fossils of the species Nemiana simplex. 

Here is a beautiful piece with a fossil snail of the species Obornella granulata together with a fossil shell of the genus Unicardium. 

Here is a fossil Megalodon tooth measuring approximately 137 mm, featuring a well-preserved root and an attractive light coloration. For comparison, the length is slightly over 5 inches.

This is a fossil Megalodon tooth measuring approximately 104  mm, featuring a well-preserved root. For comparison, the length is about 3.5 inches.

Here is a fossil Megalodon tooth measuring approximately 137 mm, featuring a well-preserved root and an attractive light coloration. For comparison, the length is slightly over 5 inches.

Here is a Megalodon tooth measuring approximately 65 mm, which is about 2.5  inches in size.
 

This is a beautiful, light colored Megalodon tooth with a length of approximately 81 mm, which is roughly 3 inches.

Here is a small Megalodon tooth measuring about 60 mm, which is a little more than 2 inches.

This Megalodon tooth is a beautiful specimen measuring about 60 mm, which is just under 2.5 inches.