Ankylosaurs

An Ultra Rare, TOP QUALITY Spicomellus afer spike osteoderm from the earliest known Ankylosaur found in the Boulemane region of Morocco. An October Fossil of the Month.  An excellent spike with an incredible natural black color and patina. The surface quality is exceptional with no pitting, nicks or wear! Fully inflated. Simple crack fill. No restoration. An exceptional quality, collector's spke. Authenticity guaranteed. Spicomellus afer specimens are quite rare and only a few have been found. This is what a real Spicomellus afer spike looks like.  Jurassic age (Bathonian) - 166 MYA. Found in the El Mers Group (formation), Boulahfa, So. of Boulemane, Fes Meknas, Morocco.

M1301c      Size: 3-5/16"   ;  1-1/8" width  ;  Base width: 3-1/8"

An Ultra Rare, TOP QUALITY Spicomellus afer spike osteoderm from the earliest known Ankylosaur found in the Boulemane region of Morocco. An October Fossil of the Month.  An excellent spike with an incredible natural red color and patina. The surface quality is exceptional with no pitting, nicks or wear! Fully inflated. Simple crack fill. No restoration. An exceptional quality, collector's spke. Authenticity guaranteed. Spicomellus afer specimens are quite rare and only a few have been found. This is what a real Spicomellus afer spike looks like.  Jurassic age (Bathonian) - 166 MYA. Found in the El Mers Group (formation), Boulahfa, So. of Boulemane, Fes Meknas, Morocco.

M1302c      Size: 3-5/16"   ;  1-1/8" width

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 LARGE, Top Quality Ankylosaurus osteoderm (bony armor plate) from the late Cretaceous of northern North America. Ankylosaurus and Denversaurus, a Nodosaur, were the two Ankylosaurs present in the Hell Creek and Lance Creek Formations.  A complete body osteoderm plate from an adult Ankylosaurus. The bone is excellent quality with excellent color / patina. Well preserved vascular channels. No cracks or restoration. Legally collected on private land in the Lance Creek Fm., Niobrara Co., Wyoming. Authenticity guaranteed. A collector's quality Ankylosaurus osteoderm. I do not see large ostederms very often.

DK25         SIZE: 5"  x  3-3/4"  x 1/2"

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

A LARGE, High Quality Ankylosaurus osteoderm (bony armor plate) from the late Cretaceous of northern North America. Ankylosaurus and Denversaurus, a Nodosaur, were the two Ankylosaurs present in the Hell Creek and Lance Creek Formations.  A complete body osteoderm plate from an adult Ankylosaurus. The bone is excellent quality with excellent color / patina. No cracks or restoration. Legally collected on private land in the Lance Creek Fm., Niobrara Co., Wyoming. Authenticity guaranteed. A collector's quality Ankylosaurus osteoderm. I do not see large ostederms very often.

DK26         SIZE: 5"  x  4-1/2"  x 5/8"

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

A Top Quality Ankylosaur osteoderm (bony armor plate) from the late Cretaceous of northern North America. Ankylosaurus and Denversaurus, a Nodosaur, were the two Ankylosaurs present in the Hell Creek and Lance Creek Formations.  A complete body osteoderm plate from an adult Ankylosaur. The bone is exceptional quality with excellent color and patina. No hydrations cracks. No restoration. Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. Authenticity guaranteed. A fantastic collector's quality Ankylosaur osteoderm.  I do not see top quality ostederms very often.

DK29         SIZE: 3-1/2"  x  2-1/4"  Height of keel = 3/4"

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

A Top Quality Ankylosaurid osteoderm (bony armor plate) from the late Cretaceous of northern North America. Ankylosaurids had their body covered with this bony armor. A body osteoderm section from a juvenile Ankylosaurid . The bone is excellent quality with excellent color and patina. It has an  excellent keel like design and is very thick. Some crack fill.. Legally collected on private land in the Horseshoe Canyon Fm., Alberta, Canada. Authenticity guaranteed. A collector's quality Ankylosaur osteoderm.  Disposition number 000028-0000029.

DK21c         SIZE:  3-5/8"  x  2-1/2" x  1-1/8" Height

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

A Top Quality Zuul crurivastator, an Ankylosaur, osteoderm or scute (bony armor plate) from the late Cretaceous of North America. The Campanian age Ankylosaurs grew to 20 feet and 6000 pounds, and a body covered with this bony armor. The bone is excellent quality with excellent color / patina. An excellent raised keell. A complete scute from an Ankylosaur with some crack fill. ~76 MYA. Legally collected on private land in the Judith River Fm., Havre, Montana. Discovered in 2016. Authenticity guaranteed. A collector's quality Ankylosaur osteoderm. 

DK28         SIZE: 3-5/8"  x 1-3/4"   Height of Keel = 7/8"

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

A Top Quality Zuul crurivastator, an Ankylosaur, osteoderm or scute (bony armor plate) from the late Cretaceous of North America. The Campanian age Ankylosaurs grew to 20 feet and 6000 pounds, and a body covered with this bony armor. The bone is excellent quality with excellent color / patina. An excellent raised keell. A complete scute from an Ankylosaur with some crack fill. ~76 MYA. Legally collected on private land in the Judith River Fm., Havre, Montana. Discovered in 2016. Authenticity guaranteed. A collector's quality Ankylosaur osteoderm. 

DK30         SIZE: 2-5/8"  x 1-7/8"   Height of Keel = 7/8"

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

A Top Quality Ankylosaurid ungual from the late Cretaceous of northern North America. Ankylosaurids had their body covered with this bony armor. This is a ungual (hood core) from a juvenile Ankylosaurid . The bone is excellent quality with excellent color and patina. No cracks or restoration. Legally collected on private land in the Horseshoe Canyou Fm., Alberta, Canada. Authenticity guaranteed. A collector's quality Ankylosaur ungual. Disposition number 000028-0000029.

DK20c         SIZE: 1-7/8"  x  1-5/8" 

Note - Adding 17 Canadian bones & teeth in April 2025.    Link to Canadian Dinosaur fossils catalog

An ultra rare, Top Quality Judith River Nodosaur body spike from the late Cretaceous of North America. AJune Fossil of the Month. The Campanian age Nodosaurs grew to 22 feet and 6000 pounds, and a body covered with this bony armor with body spikes along the edge of the body (see Edmontonia photo). Edmontonia is the named Two Medicine Fm. Nodosaur which is a good proxy to the currently undescribed Judith River Fm. Nodosaur. The bone is excellent quality with excellent color / patina. A complete side armor spike from a large Nodosaur. ~72 MYA. Note - there is less than 10% professional restoration in small areas for aesthetic purposes at the base. Legally collected on private land in the Judith River Fm., Hill Co., Montana. Authenticity guaranteed. An ultra rare collector's quality Ankylosaur body spike. I have only seen two of the spikes available in the market place. Incredibly rare and super cool. It was found in the 1940s!

DK29  BoP       SIZE: 5-1/2"  (Base:  3" x 2-3/8")   

Note - Adding 9 new Ankylosaur - Nodosaur fossils in Juine 2024.    Link to Ankylosaur fossils catalog.

An EXTRA LARGE, Top Quality Ankylosaurus osteoderm (bony armor plate) from the late Cretaceous of northern North America. A June Fossil of the Month. 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 exceptional with excellent color and patina. Well preserved vascular channels. This osteoderm also has a high ridge on one side. A couple of very small hydrations cracks only. No restoration. Legally collected on private land in the Hell Creek Fm., Garfield Co., Montana. Authenticity guaranteed. A fantastic collector's quality Ankylosaurus osteoderm. BEST quality and complete. Note - Osteoderm weighs 2.5 lbs. An international shipping surcharge will be added to "free shipping".

DK23         SIZE: 5-1/2"  x  5-1/4"  (Height = 2-1/4" on high side)

Note - Adding 9 new Ankylosaur - Nodosaur fossils in June 2024.       Link to Ankylosaur fossils catalog.