Search results for: 'bone evolution paleozo à frill revêtue'

"The Color Collection - North of the River"  An EXTRA LARGE, TOP QUALITY, upper jaw anterior Isurus planus tooth from the Sharktooth Hill area, California. This tooth is displayed on its original Round Mountain silt matrix along with a 5-1/4" whale bone. Beautiful blue crown with an excellent brown colored root. Excellent preservation. A Middle Miocene age tooth. Incredible color!  An excellent collector's Mako tooth. Authenticity guaranteed. This is a great display piece from the Ernst West Quarry.

ST301M            SIZE: 1-3/4"  (plus a 5-1/4" whale bone)

Note - Adding 34 colorful Isurus planus teeth in January 2022.  -->  Link to Isurus planus teeth.

Note - Adding 12 Sharktooth Hill display pieces in Feb. 2022.    Link to STH Display Items

An ultra rare, LARGE, Top Quality Edestus heinrichi partial tooth whorl, from Herrin, Illinois. A July Fossil of the Month. This is a Paleozoic shark that lived in swamps that our now underground coal deposits. An ultra rare triple crown whorl section with exceptional quality crowns. Excellent preservation, serrations, and serration detail. The Edestus shark would have an upper and lower tooth whorl that are vertically opposed. Research showed that they could use their opposing teeth in a scissor-like motion or a vertical whipping motion to cut prey. It is the first animal to cut vertically. A very strange looking and unique acting shark. Shark recreation image is credited to Julio Lacerdo. These rare teeth are Pennsylvanian age from Illinois. No repair or restoration. Authenticity guaranteed. 

I03        SIZE:  6-5/8" w/ root  (1-7/8" crown) 

Adding 22 Edestus shark teeth in July 2025.    Link to Edestus shark.

A TOP QUALITY, EXTRA LARGE Nanotyrannus lancensis tooth from the western US. This tooth measures 2-1/4" (straight line). The enamel is exceptional with incredible color and quality. Excellent serrations. A very small tip wear facet. Wide base with a typical Nano pinched oval cross-section. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Carter Co., Montana. Authenticity guaranteed.  A fantastic collector's BIG Nano tooth.  Note - a Riker type frame is included. Museum Quality. A monster sized, top qulaity Nano tooth. One of the finest that I have seen!

DN01 BoP2       SIZE: 2-1/4"  (13/16" W)

Note - Adding 16 Nanotyrannus teeth in October 2020  ->  Link to Nano Teeth

A LARGE, TOP QUALITY serrated Nanotyrannus lancensis premaxillary tooth from the western US. The premaxillary teeth were the front teeth, have a "D" shaped base, and were not large. Most Nano premaxillary teeth are non-serrate. This Nano has small serrations on one side - rare.  This premaxillary (front) tooth measures 1" (straight line).  The enamel is excellent quality. Note -This tooth also has a wide base for a Nano premax tooth. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Garfield Co., Montana. Authenticity guaranteed.  An excellent large collector's Nano premaxillary tooth.  Note - a gem case display is included.

DN11        SIZE: 1"  (Base: 1/2" W)

Note - Adding 16 Nanotyrannus teeth in June 2021  ->  Link to Nano Teeth

A LARGE, TOP QUALITY serrated Nanotyrannus lancensis premaxillary tooth from the western US. A March Fossil of the Month. The premaxillary teeth were the front teeth, have a "D" shaped base, and were not large. Most Nano premaxillary teeth are non-serrate. This Nano has strong serrations - rare.  The right side serrations have some wear or damage. This tooth measures 7/8" (straight line). The enamel is excellent quality. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Custer Co., Montana. Authenticity guaranteed.  An excellent collector's Nano tooth. 

DN25        SIZE: 7/8"

Note - Adding 24 Nanotyrannus teeth in March 2025  ->  Link to Nano Teeth

An EXTRA LARGE, TOP QUALITY Nanotyrannus lancensis tooth from the western US. An October Fossil of the Month. This tooth measures 2-1/4" (straight line). The enamel is excellent quality. The posterior serrations are exceptional and anterior serrations are excellent. A wide tooth with an extra large rectangular base with a typical Nano "pinched rectangle" cross-section. Possibly two cracks stabilized. No repair or restoration. Legally collected on private land in the Lance Creek Fm., Niobrara Co., Wyoming. Authenticity guaranteed.  An excellent collector's BIG Nano tooth.  Note - a 3" x 4" display frame is included. You don't see 2"+ Nano teeth very often!

DN01 BoP3        SIZE: 2-1/4"   (Base: 13/16" x 1/2")

Note - Adding 18 Nanotyrannus teeth in October 2021  ->  Link to Nano Teeth

A TOP QUALITY Nanotyrannus lancensis tooth from the western US. This tooth measures 3/4" (straight line). The enamel is excellent quality. The posterior serrations are excellent. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed.  An excellent collector's Nano tooth. Note - a gem case display is included.

DN16       SIZE: 3/4"

Note - Adding 18 Nanotyrannus teeth in August 2023  ->  Link to Nano Teeth

A TOP QUALITY Nanotyrannus lancensis tooth from the western US. This tooth measures 7/8" (straight line). The enamel is excellent quality. The posterior serrations are excellent. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed.  An excellent collector's Nano tooth. Note - a gem case display is included.

DN14       SIZE: 7/8"

Note - Adding 18 Nanotyrannus teeth in August 2023  ->  Link to Nano Teeth

A TOP QUALITY Nanotyrannus lancensis tooth from the western US. This tooth measures 15/16" (straight line). The enamel is excellent quality. The posterior serrations are excellent. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed.  An excellent collector's Nano tooth. Note - a gem case display is included.

DN13       SIZE: 15/16"

Note - Adding 18 Nanotyrannus teeth in August 2023  ->  Link to Nano Teeth

A very rare, LARGE, Top Quality Edestus heinrichi shark tooth, from Herrin, Illinois. This is a Paleozoic shark that lived in swamps that our now underground coal deposits. Note - this tooth has a lot of pyrite and the tip is naturally rounded (polished)  which thought to be due to the vertical whipping motion used to slice prey.  Excellent preservation, serrations, and serration detail. The Edestus shark would have an upper and lower tooth whorl that are vertically opposed. Research showed that they could use their opposing teeth in a scissor-like motion or a vertical whipping motion to cut prey. It is the first animal to cut vertically. A very strange looking and unique acting shark. Shark recreation image is credited to Julio Lacerdo. These rare teeth are Pennsylvanian age from Illinois. No repair or restoration. Authenticity guaranteed. 

I09        SIZE:  4-1/8" w/ root  (1-7/8" crown) 

Adding 22 Edestus shark teeth in July 2025.    Link to Edestus shark.

A TOP QUALITY Nanotyrannus lancensis premaxillary tooth from the western US. The premaxillary teeth were the front teeth, have a "D" shaped base, and were not large. Most Nano premaxillary teeth are non-serrate. This tooth measures 5/8" (straight line). The enamel is excellent quality. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Carter Co., Montana. Authenticity guaranteed.  An excellent collector's Nano tooth. 

DN24        SIZE: 5/8"

Note - Adding 24 Nanotyrannus teeth in March 2025  ->  Link to Nano Teeth

A TOP QUALITY Nanotyrannus lancensis premaxillary tooth from the western US. The premaxillary teeth were the front teeth, have a "D" shaped base, and were not large. Most Nano premaxillary teeth are non-serrate. This tooth measures 1/2" (straight line). The enamel is excellent quality. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. Authenticity guaranteed.  An excellent collector's Nano tooth. 

DN23        SIZE: 1/2"

Note - Adding 24 Nanotyrannus teeth in March 2025  ->  Link to Nano Teeth