Search results for: 'bone evolution paper à first revêtue'

A LARGE RARE, Top Quality Acheroraptor temertyorum (raptor) tooth from So. Dakota. Acheroraptor temertyorum is one of two recently described Hell Creek Fm. raptors, and it is a close relative of Velociraptor. This tooth is 1/2" which is a large size. The enamel is excellent with a great brown color. Multiple prominent longitudinal "ribs" run the length of the crown. Excellent large posterior and small anterior serrations. There is a natural wear facet on the tip. See unique crown characteristic discussion below. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. Note - the 2013 Acheroraptor description paper is available upon request. Authenticity guaranteed. This is your chance to own a rare, top quality Acheroraptor temertyorum tooth.  Note - A gem jar will be included as photographed.

DR12       SIZE: 1/2"

Note - Adding 10 new Acheroraptor teeth in May 2025      Link to Raptor (Dromaeosaur) catalog.

A LARGE RARE, Top Quality Acheroraptor temertyorum (raptor) tooth from So. Dakota. Acheroraptor temertyorum is one of two recently described Hell Creek Fm. raptors, and it is a close relative of Velociraptor. This tooth is 1/2" which is a large size. The enamel is excellent with a great brown color. Multiple prominent longitudinal "ribs" run the length of the crown. Excellent large posterior and small anterior serrations. There is a small natural wear facet on the tip. See unique crown characteristic discussion below. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. Note - the 2013 Acheroraptor description paper is available upon request. Authenticity guaranteed. This is your chance to own a rare, top quality Acheroraptor temertyorum tooth.  Note - A gem jar will be included as photographed.

DR11       SIZE: 1/2"

Note - Adding 10 new Acheroraptor teeth in May 2025      Link to Raptor (Dromaeosaur) catalog.

A rare, Top Quality Anzu wyliei hand (manus) claw from the Hell Creek Fm. of So. Dakota. Anzu is referred to as the "Chicken from Hell". An excellent manus claw. Excellent rich light brown color and patina. This specimen has excellent perservation. Note - a portion of the tip was professionally restored which is typical for most Hell Creek claws. A top quality, collector's claw from the Hell Creek of So. Dakota. Note - 2014 Anzu wyliei description paper attached below. Check out our selection of top quality Anzu wyleii claws! Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. Authenticity guaranteed. Note - a Riker display frame will be included. 

DA02       Size: 2-3/4" (straightline)    

Note - Adding 7 Anzu wyliei claws & bones in September 2023.      Link to Anzu wyliei claws.

My recommendation for the collector's first reference guide to identify their Miocene - Pliocene age collection pieces. A must for the Lee Creek fossil collector - shark teeth and other fossils.

BB08            Size: 5-1/2"  x 8-1/2"

A rare, Top Quality Anzu wyliei toe (pes) claw from the Judith River Fm. of Montana. Anzu is referred to as the "Chicken from Hell". An excellent pes claw. Good light brown color and patina. This specimen has good perservation with minor erosion. There is a very small tip repair whic is common. A quality, collector's claw from the JUdith River of Montana. Note - 2014 Anzu wyliei description paper attached below. Check out our selection of quality Anzu wyleii claws! Legally collected on private land in the Judith River Fm., Hill Co., Montana. Authenticity guaranteed. Note - a Riker display frame will be included. You don't see very many Anzu claws from the Judith River formation.

DA05       Size: 1-13/16" (straightline)    

Note - Adding 7 Anzu wyliei claws & bones in September 2023.      Link to Anzu wyliei claws.

A rare, "GEM" Quality Anzu wyliei toe (pes) claw from the Hell Creek Fm. of Montana. A September Fossil of the Month. Anzu is referred to as the "Chicken from Hell". An excellent manus claw. Excellent rich brown color and patina. This specimen is complete with exceptional perservation. Fantastic surfaces. No repair or restoration. A top quality, collector's claw from the Hell Creek of Montana. Note - 2014 Anzu wyliei description paper attached below. Check out our selection of top quality Anzu wyleii claws! Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. Museum quality secimen. Note - a Riker display frame will be included. The PERFECT Anzu toe claw.  The BEST!

DA04       Size: 2-15/16" (straightline)    

Note - Adding 7 Anzu wyliei claws & bones in September 2023.      Link to Anzu wyliei claws.

A rare, Top Quality Anzu wyliei caudal (tail) vertebra from the Hell Creek Fm. of Montana. Anzu is referred to as the "Chicken from Hell". An excellent vertebra. Excellent light brown color and patina. This specimen has excellent perservation. Note - the open cell structure of this theropod vertabra. Also note the large pneumatic fossa on the sides - an Anzu vertebra trait. There is a segment of tendon fossilized with this vertebra. A top quality, collector's vertebra from the Hell Creek of Montana. Note - 2014 Anzu wyliei description paper attached below. Legally collected on private land in the Hell Creek Fm., McCone Co., Montana. Collected in 2003. Authenticity guaranteed. Museum Quality. These are rare vertebrae to find.

DA19       Size: 1-3/4"  ;  end dimensions:   1-5/8" x 2"

Note - Adding 14 Anzu wyliei bones & claws in September 2022.   Link to Anzu wyliei claws.

The North Carolina Fossil Club provides an excellent guide to the Cretaceous - Eocene - Paleocene - Oligocene shark teeth from North Carolina. My recommendation for the collector's first reference guide to identify their Cretaceous - Paleocene - Eocene collection pieces. 

BB09              Size:  5-1/2" x 8-1/2"

A Top Quality Cretoxyrhina mantelli tooth from Ness Co., Kansas. An excellent example of this Cretaceous shark. Authenticity guaranteed. 

KS014            SIZE: 11/16"

Note - Adding 15  new  Cretoxyrhina mantelli teeth in April 2020.   Link to Kansas Cretoxyrhina teeth

A HIgh Quality Cretoxyrhina mantelli tooth from Ness Co., Kansas. An excellent example of this Cretaceous shark. Authenticity guaranteed. 

KS013            SIZE: 11/16"

Note - Adding 15  new  Cretoxyrhina mantelli teeth in April 2020.   Link to Kansas Cretoxyrhina teeth

A Top Quality Cretoxyrhina mantelli tooth from Ness Co., Kansas. An excellent example of this Cretaceous shark. Authenticity guaranteed. Perfect tooth.

KS012            SIZE: 3/4"

Note - Adding 15  new  Cretoxyrhina mantelli teeth in April 2020.   Link to Kansas Cretoxyrhina teeth

A Top Quality Cretoxyrhina mantelli tooth from Ness Co., Kansas. An excellent example of this Cretaceous shark. Authenticity guaranteed. Near Perfect tooth.

KS011            SIZE: 15/16"

Note - Adding 15  new  Cretoxyrhina mantelli teeth in April 2020.   Link to Kansas Cretoxyrhina teeth