Search results for: 'colorado 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 ultra rare Top Quality Stegoceras validum dome (frontoparietal skull bone) from the late Cretaceous of northern North America. An April Fossil of the Month. Stegoceras is a smaller sized pachycephalosaurid dinosaur, and like Pachycephalosaurus, it is a dinosaur which is famous for its large domed head surrounded by spikes. This is excellent quality juvenile dome with good color / patina. No cracks or restoration. There is a small sheer on the left side that occured prior to fossilization since it has the natural patina. Otherwise a complete dome. An ultra rare Stegoceras dome!  Legally collected on private land in the Judith River Fm., Hill Co., Montana. An excellent collector's quality Stegoceras dome. Comes with a Riker display case. Authenticity guaranteed. You don't see Stegoceras domes very often. This is a very special, prefect little dome!  (Photo series = top, bottom, right side, left side, and rear).

DP50       SIZE: 2-5/8" x 2"   (1-1/2" thick)  

Note - Adding 13 new Pachy spikes, claws and teeth in April 2023.   Link to Pachy fossils catalog

A rare, Top Quality Ankylosaurus magniventris tooth from the late Cretaceous of northern North America. Ankylosaurus magniventris was the largest Ankylosaur which grew to 30 feet and 17000 pounds. The enamel is excellent quality with excellent color / patina. Partial root. No cracks or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. A collector's quality Ankylosaur tooth. Note - tooth comes with the gem case pictured.

DK15      SIZE: 1/4"    

Note - Adding 20 new Ankylosaur - Nodosaur fossils in July 2018.       Link to Ankylosaur fossils catalog.

An extinct early rabbit jaw (Palaeolagus haydeni) from Sioux Co., Nebraska. Palaeolagus 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. This item comes witha 2"x 2" floating frame display.

WR26        Size: 1/2"  

Name: Palaeolagus haydeni 

Age:  Oligocene

Location: Sioux Co., Nebraska

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

An extinct early rabbit jaw (Palaeolagus haydeni) from Sioux Co., Nebraska. Palaeolagus 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. This item comes witha 2"x 2" floating frame display.

WR25        Size: 5/8"  

Name: Palaeolagus haydeni 

Age:  Oligocene

Location: Sioux Co., Nebraska

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

An extinct early rabbit jaw (Palaeolagus haydeni) from Sioux Co., Nebraska. Palaeolagus 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. This item comes witha 2"x 2" floating frame display.

WR23        Size: 11/16"  

Name: Palaeolagus haydeni 

Age:  Oligocene

Location: Sioux Co., Nebraska

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

An extinct early rabbit jaw (Palaeolagus haydeni) from Sioux Co., Nebraska. Palaeolagus 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. This item comes witha 2"x 2" floating frame display.

WR22        Size: 3/4"  

Name: Palaeolagus haydeni 

Age:  Oligocene

Location: Sioux Co., Nebraska

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

An extinct early rabbit jaw (Palaeolagus haydeni) from Sioux Co., Nebraska. Palaeolagus 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. This item comes witha 2"x 2" floating frame display.

WR21        Size: 11/16"  

Name: Palaeolagus haydeni 

Age:  Oligocene

Location: Sioux Co., Nebraska

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

An extinct early ground squirrel jaw (Ischyromys sp.) from Sioux Co., Nebraska. Ischyromys 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. This item comes witha 2"x 2" floating frame display.

WR17        Size: 7/8"  

Name: Ischyromys sp. 

Age:  Oligocene

Location: Sioux Co., Nebraska

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

An extinct early ground squirrel jaw (Ischyromys sp.) from Sioux Co., Nebraska. Ischyromys 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. This item comes with a 2"x 2" floating frame display.

WR16        Size: 1"  

Name: Ischyromys sp. 

Age:  Oligocene

Location: Sioux Co., Nebraska

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

An extinct early ground squirrel jaw (Ischyromys sp.) from Sioux Co., Nebraska. Ischyromys 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. This item comes with a 2"x 2" floating frame display.

WR15        Size: 13/16"  

Name: Ischyromys sp. 

Age:  Oligocene

Location: Sioux Co., Nebraska

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