That femur led to a stegosaurus fossil, among the largest and most complete ever found, which has subsequently been nicknamed “Apex.” In July the Sotheby’s auction house will sell Apex at auction at an estimated value of $4 million to $6 million, making the skeleton the latest flashpoint in a long-running debate about the private fossil trade. Dinosaur fossils have fetched escalating prices at auction houses since 1997, when Sotheby’s sold “Sue” the Tyrannosaurus rex to the Field Museum in Chicago for $8.36 million. In 2020, “Stan,” another largely complete T. rex skeleton, sold at Christie’s for $31.8 million. Such pricing has raised serious concerns among academic paleontologists, said Stuart Sumida, vice president of the Society of Vertebrate Paleontology. Many of them have watched fossils that may unlock scientific mysteries get steered into the hands of wealthy private collectors rather than toward research institutions in recent decades.

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Persons: Jason Cooper, Sotheby’s, Sue ”, “ Stan, ”, Stuart Sumida Organizations: Apex, Field Museum, Vertebrate Locations: Colorado, Dinosaur, ”, Chicago