Royal Tyrrell Museum of Palaeontology
Found in southern Alberta in an area where dinosaur fossils are uncommon, "Calli" is the Royal Tyrrell Museum’s third largest dinosaur skull.The fossil’s black tint is believed to be caused by large amounts of manganese present in surrounding groundwater during fossilization, similar to the Royal Tyrrell Museum’s 'Black Beauty,' a Tyrannosaurus Rex fossil found in the same region.
Following the floods that tore through Alberta about 10 years ago, the Royal Tyrrell staff were engaged in flood mitigation paleontology work when the triceratops skull was discovered in 2014. Transported via helicopter in giant, heavy chunks, the skull and most of the jaw pieces were extracted over the course of a month in 2015. The rest of the triceratops' skeleton was not found.
"Paleontologists know this because the specimen was found in different rock layers, and the poorly preserved horn tips suggest they were exposed to additional weathering and erosion," reads a museum blog about the triceratops skull.From 2016 to 2023, Royal Tyrrell technician Ian Macdonald spent over 6,500 hours preparing this fossil, removing over 815 kilograms of rock that encased the skull.
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