Search results for: 'tan than the đông non á'

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 rare, Top Quality Hexanchus collinsonae tooth, a Sixgill Cow shark, from the Muddy Creek / Fisher - Sullivan site, Virginia.  A lower jaw tooth with 5 primary cusps. Exceptional color and preservation. This is an Early Eocene (Ypresian) age, Nanjemoy Formation tooth. A special collector's Cow shark tooth. Authenticity guaranteed. 

MC957         Size: 3/8"+

Note adding 15 Muddy Creek Cow shark teeth in June 2022.  --> Link to Muddy Creek Cow Shark teeth

A rare, Top Quality Hexanchus collinsonae tooth, a Sixgill Cow shark, from the Muddy Creek / Fisher - Sullivan site, Virginia.  A lower jaw tooth with 5 primary cusps. Exceptional color and preservation. This is an Early Eocene (Ypresian) age, Nanjemoy Formation tooth. A special collector's Cow shark tooth. Authenticity guaranteed. 

MC956         Size: 7/16"

Note adding 15 Muddy Creek Cow shark teeth in June 2022.  --> Link to Muddy Creek Cow Shark teeth

A GEM rolled Phacops trilobite on a Silica Shale matrix. Check out the detail of the compound eyes - Exceptionally preserved. The quality of the Silica Shale Fm. trilobites are incredible. A TOP QUALITY specimen from the Middle Devonian (380 mya), Silica Shale Fm. from Lucas Co., Ohio. A collector's must have item!

X112           Size: 1-1/4"

A scarce, Top Quality Abelisaurid dinosaur tooth from the Cretaceous Kem Kem deposits of Morocco. This is a premaxillary (front) tooth with a "D" shaped base cross-section. Once thought to be a "raptor" tooth, it is now clear that these teeth are Abelisaurid, a family of ceratosaurian theropod dinosaurs with the unique straight posterior carina. They were the dominate smaller theropod in the late Cretaceous Kem Kem deposit. Fantastic red color and serrations. Excellent preservation. No repair or restoration. Authenticity guaranteed. A fantastic Abelisaurid tooth.  They do not find many premaillary teeth.

M1256       Size: 9/16"

Note - 9 new Abelisaurid / Raptor teeth added in January 2022.     Link to Abelisurid / Raptor teeth

A Top Quality Ptychodus mammillaris, an extinct durophagous (shell-crushing) shark, tooth from Dallas Co., Texas. An excellent example of this Upper Cretaceous Kamp Ranch Fm. tooth. These massive teeth have a design with strong transverse ridges across the cusp that transition to a concentric pattern at the base of the cusp. Authenticity guaranteed. Perfect tooth. This is a rare species.

T276            SIZE: 1/2"+

Note - Adding 100+ new Texas shark teeth in October 2021.   Link to Texas shark teeth

A Top Quality Ptychodus mammillaris, an extinct durophagous (shell-crushing) shark, tooth from Dallas Co., Texas. An excellent example of this Upper Cretaceous Kamp Ranch Fm. tooth. These massive teeth have a design with strong transverse ridges across the cusp that transition to a concentric pattern at the base of the cusp. Authenticity guaranteed. Perfect tooth. This is a rare species.

T275            SIZE: 9/16"

Note - Adding 100+ new Texas shark teeth in October 2021.   Link to Texas shark teeth

A Top Quality Ptychodus mammillaris, an extinct durophagous (shell-crushing) shark, tooth from Dallas Co., Texas. An excellent example of this Upper Cretaceous Kamp Ranch Fm. tooth. These massive teeth have a design with strong transverse ridges across the cusp that transition to a concentric pattern at the base of the cusp. Authenticity guaranteed. Perfect tooth. This is a rare species.

T274            SIZE: 5/8"

Note - Adding 100+ new Texas shark teeth in October 2021.   Link to Texas shark teeth

A Top Quality Ptychodus mammillaris, an extinct durophagous (shell-crushing) shark, tooth from Dallas Co., Texas. An excellent example of this Upper Cretaceous Kamp Ranch Fm. tooth. These massive teeth have a design with strong transverse ridges across the cusp that transition to a concentric pattern at the base of the cusp. Authenticity guaranteed. Perfect tooth. This is a rare species.

T273            SIZE: 11/16

Note - Adding 100+ new Texas shark teeth in October 2021.   Link to Texas shark teeth

A Top Quality Ptychodus mammillaris, an extinct durophagous (shell-crushing) shark, tooth from Dallas Co., Texas. An excellent example of this Upper Cretaceous Kamp Ranch Fm. tooth. These massive teeth have a design with strong transverse ridges across the cusp that transition to a concentric pattern at the base of the cusp. Authenticity guaranteed. Perfect tooth. This is a rare species.

T272            SIZE: 13/16

Note - Adding 100+ new Texas shark teeth in October 2021.   Link to Texas shark teeth

A Top Quality Ptychodus whipplei, an extinct durophagous (shell-crushing) shark, tooth from Ellis Co., Texas. An excellent example of this Upper Cretaceous Arcadia Park Fm. tooth. These massive teeth have a design with a very tall conical cusp with transverse ridges extending across the cusp face, but typically do not reach the margin. Authenticity guaranteed. Perfect tooth. A juvenile symphyseal tooth.

T031            SIZE: 3/16"

Note - Adding 100+ new Texas shark teeth in October 2021.   Link to Texas shark teeth

A Top Quality Ptychodus whipplei, an extinct durophagous (shell-crushing) shark, tooth from Ellis Co., Texas. An excellent example of this Upper Cretaceous Arcadia Park Fm. tooth. These massive teeth have a design with a very tall conical cusp with transverse ridges extending across the cusp face, but typically do not reach the margin. Authenticity guaranteed. Perfect tooth. A juvenile symphyseal tooth.

T030            SIZE: 1/4"

Note - Adding 100+ new Texas shark teeth in October 2021.   Link to Texas shark teeth