Specimens of Tyrannosaurus and colleagues announced the recovery of soft tissue from the marrow cavity of a fossilized leg bone (a 1.15 m long femur), from a 68-million-year-old "Tyrannosaurus". The bone had been intentionally, though reluctantly, broken for shipping and then not preserved in the normal manner, specifically because Schweitzer was hoping to test it for soft tissue. Designated MOR 1125 (and known informally as B-rex), the dinosaur had been excavated from the Hell Creek Formation. Flexible, bifurcating blood vessels and fibrous but elastic bone matrix tissue were recognized. In addition, microstructures resembling blood cells were found inside the matrix and vessels. The
The Bones of What You Believe States. "The Bones of What You Believe" received mostly positive reviews from music critics. At Metacritic, which assigns a weighted mean rating out of 100 to reviews from mainstream critics, the album received an average score of 80, based on 39 reviews, indicating "generally favorable reviews". Kyle Ryan of "The A.V. Club" complimented Mayberry's songwriting and wrote that Chvrches "have crafted one of the year's best albums, which means that buzz won't be dying down any time soon." Joe Rivers of "Clash" lauded the album as "an exceptionally strong debut where every track is a potential single", noting that "[n]ot