11.6" Hadrosaur (Brachylophosaurus?) Sacrum w/ Metal Stand - Montana

Hadrosaur (Brachylophosaurus?) Sacrum w/ Metal Stand - Montana #227751

This is an 11.6" wide Hadrosaur (Brachylophosaurus or Probrachylophosaurus) sacrum from the Judith River Formation of Montana. The bone is in great condition with gorgeous coloration and spots of phenomenal cortical bone preservation. It is accompanied by the pictured, custom metal display stand.

Because the two hadrosaur genera Brachylophosaurus and Probrachylophosaurus share such similar post-cranial anatomies, it is extremely difficult to identify which genus this particular specimen belongs to.

The sacrum is overall nicely intact, requiring very little repair or restoration. The majority of repair is in the form of glue stabilization in areas where the bone was found fragmented. Rock has been left within the neural canal for structural integrity.

Hadrosaurs

are frequently referred to as duck-billed dinosaurs and are members of the Ornithischian family Hadrosauridae. They were fairly common herbivores that roamed Asia, Europe, and North America during the Upper Cretaceous Period. Many species of Hadrosaurs had distinctive crests on their heads, some of which had air-filled chambers that may have produced a distinct sound. These crests may have been used for both audio and visual display purposes.

The Judith River Formation is one of the world's most prolific sources of Late Cretaceous vertebrate fossils. At least sixteen Orders containing more than forty Genera are known from the formation. These include fish, amphibians, mammals, and insects in addition to reptiles and avian (birds) and non-avian dinosaurs. Among the more interesting specimens is Leonardo, a mummified and fossilized Brachylophosaurus. This is a hadrosaur, a duck-billed dinosaur found with amazing soft-tissue preservation: skin impressions can be found on 90 percent of its body! The pattern in the skin on its feet is even preserved. In addition to Leonardo, the Judith River Formation contains the remains of the theropod Hesperornis, the only known freshwater Hespernorthid, a penguin-like bird.

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