Search results for: 'mako shark teeth fossils miocene epoch/'

An extinct extinct Oreodont jaw (Merycoidodon gracilis ) from Sioux Co., Nebraska. Merycoidodon gracilis was one of many mammals that thrived in the Early Oligocene in North America. Found in the Brule Fm. (Rupelian) 33 - 30 million years ago. A very well preserved specimen. No repair or restoration. Authenticity guaranteed. 

WR73      Size: 3-3/8"  long 

Name: Merycoidodon gracilis 

Age:  Oligocene

Location: Sioux Co., Nebraska

Note - Posting 49 Oligocene Mammal fossils in January 2025.      Link to Oligocene Mammal Fossils

An extinct extinct Oreodont jaw (Merycoidodon gracilis ) from Sioux Co., Nebraska. Merycoidodon gracilis was one of many mammals that thrived in the Early Oligocene in North America. Found in the Brule Fm. (Rupelian) 33 - 30 million years ago. A very well preserved specimen. No repair or restoration. Authenticity guaranteed. 

WR72      Size: 3-1/2"  long 

Name: Merycoidodon gracilis 

Age:  Oligocene

Location: Sioux Co., Nebraska

Note - Posting 49 Oligocene Mammal fossils in January 2025.      Link to Oligocene Mammal Fossils

An extinct extinct Oreodont jaw (Merycoidodon gracilis ) from Sioux Co., Nebraska. Merycoidodon gracilis was one of many mammals that thrived in the Early Oligocene in North America. Found in the Brule Fm. (Rupelian) 33 - 30 million years ago. A very well preserved specimen. No repair or restoration. Authenticity guaranteed. 

WR71      Size: 3-1/2"  long 

Name: Merycoidodon gracilis 

Age:  Oligocene

Location: Sioux Co., Nebraska

Note - Posting 49 Oligocene Mammal fossils in January 2025.      Link to Oligocene Mammal Fossils

An EXTRA LARGE, Top Quality Ankylosaurus osteoderm (bony armor plate) from the late Cretaceous of northern North America. Ankylosaurus magniventris was the largest Ankylosaur which grew to 30 feet and 17000 pounds, and a body covered with this bony armor. A complete body osteoderm plate from an adult Ankylosaurus. The bone quality is excellent with excellent color and patina. This osteoderm has a high ridge on one side. There are some hydration cracks and crack fill. No restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. An excellent collector's quality Ankylosaur osteoderm. A thick and heavy osteoderm.

DK23         SIZE: 6-1/2"  x  4-3/8"  (Height = 1-3/4" on high side)

Note - Adding 7 new Ankylosaur - Nodosaur fossils in August 2025.       Link to Ankylosaur fossils catalog.

A Top Quality Great White shark tooth from the Ica region of Peru. Upper jaw anterior tooth. A mildly pathologic with enamel wrinkling and a slight twist. High quality enamel. An excellent Blue & Tan colored crown with very good serrations. Mild natural desert polish. Excellent color! A desert shark from the deserts of Peru!  No repair or restoration. Authenticity guaranteed. You don't see these teeth any more.  There has been no new material for 20 years!  

P201        SIZE: 2-3/16"

Note - Adding 22 new Peruvian Great White teeth in July 2023 ->  Link to Peru GW Teeth

A Top Quality, Rare Pachychephalosaurus wyomingensis spike from the late Cretaceous of northern North America. Pachychephalosaurus is the dinosaur which is famous for its large domed head surrounded by these spikes and nodes. These spikes and nodes were part of the skull. This spike has excellent color / patina. It is a nearly complete specimen with no cracks or breaks. Legally collected on private land in the Hell Creek Fm., Garfield Co., Montana. An excellent collector's quality Pachychephalosaurus spike. You don't see these skull pieces very often. No repair or restoration. Authenticity guaranteed.

DP40       SIZE: 1-1/2"   (7/8" W) 

Note - Adding 6 new Pachy spikes / teeth in February 2025.       Link to Pachy fossils catalog

A Pair of rare, Top Quality Lagarodus sp., an extinct primitive shark tooth, from the Paleozoic era in Kentucky. Great color. A well preserved specimen. No repair or restoration. Authenticity guaranteed. Excellent collector's teeth! 

Age: Upper Mississippian (330 MYA); Salem Limestone Fm.

Location: Hardin Co., Kentucky

Z032      SIZE: 5/8" ; 3/8"

Adding 55 US Paleozoic teeth in May 2022  -->  Link to US Paleozoic teeth

A HUGE, 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. Note - one margin has a natural crack which contains matrix within it and the root structure is missing. This is a rare species and a suer rare size - this specimen exceeds the maximum size recorded for Texas!

T271            SIZE: 1-13/16"  x 1-1/8"

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

A LARGE, Top Quality Hexanchus griseus tooth from the Caldera Basin of Chile. Fantastic blue color with a red root. This is complete lower jaw tooth from a large shark. Superb preservation and color. Eight primary cusps. An excellent root which is very unique & extremely difficult to find! A Perfect rare collector's tooth. Authenticity guaranteed. Unfortunately there are no more teeth coming from this site. This rare piece is from an old collection.     

C405L          Size: 1-7/16"

Note - Adding 18 new Chilean Hexanchus teeth in February 2024 ->  Link to Hexanchus Teeth 

An Ultra Rare, Hexanchus griseus symphyseal tooth from the Caldera Basin of Chile. This is complete lower jaw symphyseal tooth. A rare male shark. Superb preservation and color. Nine plus very sharp and one primary cusp surrounded by many small pathologic cusps. An excellent complete root. Authenticity guaranteed. Museum Quality collector's tooth. Unfortunately there are no more teeth coming from this site. This is a piece from an old collection.

C402L          Size: 13/16" W  (13/16" H)

Note - Adding 22 new Chilean Hexanchus teeth in May 2021 ->  Link to Hexanchus Teeth 

A VERY RARE, Top Quality Hexanchus griseus posterior tooth from the Caldera Basin of Chile. This is complete lower jaw posterior tooth from a large shark. Superb preservation and color. One primary cusp is fully formed. An excellent root - very unique & extremely difficult to find! A Perfect rare collector'stooth. Authenticity guaranteed. Unfortunately there are no more teeth coming from this site. This rare piece is from an old collection. This is one of the few posterior teeth that I have seen - very rare!    

C410L          Size: 7/16"

Note - Adding 18 new Chilean Hexanchus teeth in February 2024 ->  Link to Hexanchus Teeth 

A VERY RARE, Top Quality Hexanchus griseus posterior tooth from the Caldera Basin of Chile. This is complete lower jaw posterior tooth from a large shark. Superb preservation and color. Three primary cusps fully formed. An excellent root - very unique & extremely difficult to find! A Perfect rare collector's tooth. Authenticity guaranteed. Unfortunately there are no more teeth coming from this site. This rare piece is from an old collection. This is one of the few posterior teeth that I have seen - very rare!    

C409L          Size: 9/16"

Note - Adding 18 new Chilean Hexanchus teeth in February 2024 ->  Link to Hexanchus Teeth