Two fossilized dinosaur skeletons found on a Montana ranch have failed to sell at a New York City auction. A pre-sale estimate predicted that the skeletons, offered as a single lot, could fetch between US$7-million and US$9-million. But they did not make the reserve at the Bonhams auction on Tuesday. The highest offer was US$5.5-million.
The nearly complete skeletons are billed as the “Montana Dueling Dinosaurs” because they appear locked in mortal combat. One is a plant eater, the other a meat eater. The skeletons were discovered in 2006 by a fossil hunter on a neighbour’s ranch in an area where dinosaurs once roamed. The sellers believe one may be a close relative of Tyrannosaurus rex. The other may be a new species similar to Triceratops.
There were hopes that a philanthropist would buy them and donate them to a public institution.
It started with a dinosaur pelvis protruding through the rock at a Montana ranch. Three more months of chiseling and digging revealed a remarkable discovery: two nearly complete, fossilized dinosaur skeletons of a carnivore and herbivore, their tails touching. A pushed-in skull and teeth of one dinosaur embedded in the other suggested a mortal confrontation between them.
Clayton Phipps, a fossil hunter, made the discovery on his neighbour’s land in 2006 in the fossil-rich Hell Creek Formation.
Clayton Phipps...discovered fossils
The auction record for a dinosaur fossil is slightly more than $8.36-million, which was set in October 1997 for a Tyrannosaurus rex skeleton that sold at Sotheby’s. Known as Sue, the skeleton is on display at The Field Museum in Chicago.
The fossils are believed to be a Nanotyrannus lancensis, a smaller relative of the T. rex, and a newly discovered species of Chasmosaurine ceratopsian, a close relative of the Triceratops, which lived at the end of the Cretaceous age some 65 million years ago.
Model of fossils...just as they were found
“I am just the lucky guy that happened to stumble out there and find this dinosaur,” Phipps said. “I really appreciate the academic paleontologists that understand the importance of what us amateurs bring to the mix. I am hoping that it will be professionally and academically studied. … I want to know more about them.”
They were found fully articulated with pockets of skin tissue attached. They have been separated into four large blocks because of their total 40-ton weight and are on display in a plaza adjacent to Bonhams. Kirk Johnson, director of the Smithsonian’s National Museum of Natural History, called the dinosaurs “a significant discovery.”
“They are a superb pair of specimens and are certainly of great scientific and display value,” he said. “This pair is certainly a unique find” for the Hell Creek Formation.
Thomas Lindgren, Bonhams co-consulting director of natural history, said scientists will have to determine whether the ceratopsian was indeed a new species, but either way, it would “still be one of the rarest ceratopsians of all time.”
“It is either the most complete and oldest triceratops that had lived at the end of the Cretaceous or it’s a brand-new species,” he said.
Johnson, who plans to see the fossils before the auction, said the skeletons would need to be extracted from their enclosing sandstone and compared to other skeletons in various museums to determine their “actual completeness.”
Finding a carnivore and herbivore together is “very unusual,” said Johnson, whose museum is scheduled to open a new dinosaur hall in 2019 but has no plans to bid on the skeletons.
“Any time you have a complete skeleton you can do things that can help you understand the biology of the species."