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INNER (LINGUAL) SIDE OF DENTARY SHOWING TOOTH BATTERY DETAIL

HIGHLIGHTED AREA ABOVE REPRESENTS REGION ON THE SKULL WHERE THIS SPECIMEN COMES FROM

TEETH BATTERY WONDERFULLY DETAILED WITH TEETH NOT YET ERUPTED STILL IN JAW BONE

TRICERATOPS RIGHT DENTARY JAW BONE WITH TEETH AND SOCKET DETAIL

Hell Creek Formation, South Dakota, U.S.A.

LATE CRETACEOUS PERIOD:  72 - 65 million years ago

Collected from the famous Hell Creek Formation of Northwestern U.S.A., this is a rare right dentary (jaw) of one of the most famous dinosaurs, Triceratops horridus.  The fourth photo from the top shows where this specimen would be located on the skull.  This very rare fossil represents the majority of the toothed portion of the jaw OF A FULL-GROWN ADULT TRICERATOPS.  The inner (lingual) side shows superb tooth battery detail with some teeth low in the jaw and with full crowns as they have not yet erupted to be used and worn.  Unlike small jaw fragments, this is an extremely rare, large portion and includes obvious anatomical features for us to be able to exactly locate and know what part of the jaw this specimen is.  The fenestrae (openings in bone) are extremely well-preserved and complete along with superb bone surface details.  This specimen would make a very impressive display of immense educational value.  The way the teeth battery in the jaw was designed on the Triceratops is an excellent representation of all herbivorous dinosaurs.  Here with this fossil jaw, all this detail is readily visible.  Since this is the majority portion of the lower right dentary and it is INTACT WITH NO REPAIR AND NO FABRICATION, a specimen such as this is not one that very many private collectors can boast of having.  As Hadrosaur fossil bones are more commonly found in Hell Creek than Triceratops, this lower jaw can be considered much more rare than an equivalent from a Hadrosaur dinosaur.  This specimen is substantial in weight and comes from a full-grown adult Triceratops. 
 


Horned ceratopians were extravagantly well-armored in their head region.  Their skulls were heavy and armed with long, pointed horns.  Extending off to the rear was a great sheet of heavy bone called the "frill".  On some horned ceratopians, this was a solid sheet and likely served as a shield to protect the neck and even shoulders.  On other types, the frill was an open framework of bone that was covered with skin, possibly acting as a heat shield or for social display.  The edge of the frill on most horned ceratopians was armored with blunt, triangular spikes called epoccipitals .  

Triceratops is the most famous of the great horned dinosaurs.  This plant-eating group has been found in the fossil record in greater abundance than all the other varieties.  A full grown Triceratops is estimated to have weighed 11 tons, heavier than a modern African bull elephant.  Its skull was 6.5 feet long with a pair of brow horns that exceeded 3 feet in length. 

RARE OPPORTUNITY TO ACQUIRE A NATURAL LARGE PORTION OF THE LOWER JAW OF THIS FAMOUS DINOSAUR!

8.5" long by 5" high

SOLD     DB19-003     INCLUDES STAND     Actual Item - One Only

CLICK HERE TO SEE MORE HORNED DINOSAUR FOSSILS FOR SALE

THE HELL CREEK FORMATION OF NORTHWESTERN U.S.A.

1995