Here is a fossil conifer cone of the dawn redwood of the species Metasequoia occidentalis from Montana.

This is a Utah trilobite of the species Elrathia kingi with a length of about 14 mm from the Wheeler Shale.

Here is a large specimen of a trilobite of the genus Megalaspides as the Ordvizian of Morocco.

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 an inexpensive specimen of a large megalodon tooth. When complete, the tooth would have been a good 4.5 inches, i.e. about 115 mm.

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 detailed megalodon tooth with a size of about 75 mm, so about 3 inches.

Here is a very nice Megalodon tooth with a size of about 87 mm, so roughly 3.5 inches.

This Megalodon tooth is a beautiful specimen measuring 70 mm, which is approximately 2.5 inches.

This Megalodon tooth is a beautiful specimen with a size of 78 mm. This is about 3 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 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 Megalodon tooth measuring about 106 mm, which corresponds to roughly 4 inches.

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

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

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

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

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 Utah trilobite of the species Elrathia kingi from the Wheeler Shale.

This Utah Trilobite is a large and detailed specimen of the species Elrathia kingi 
The Trilobite itself is about 43 mm long.

This is a trilobite of genus Kingaspis from the Jebel Wawrmast Formation of Morocco.

Here is a trilobite of the relatively rare species Kymataspis arenosa from the Jebel Wawrmast Formation of Morocco. 

This is a double specimen featuring two trilobites of the genus Kingaspis from the Jebel Wawrmast Formation.