Also, a recent abstracts book. Paleontology abstracts start on page 23.
NEW INFORMATION ABOUT THE LOCATION AND SKELETAL STRUCTURE OF THE TYRANNOSAURUS REX SPECIMEN AT THE MUSEUM OF WORLD TREASURES
New information about the Tyrannosaurus rex at the Museum of World Treasures (MOWT L07-023-001) has shed light on its location in the Hell Creek Formation and on the structure and function of its trunk. MOWT L07-023-001 was recovered from Harding County, South Dakota. Its remains were recovered approximately 42 meters from the base of the Hell Creek Formation, placing it right in the middle of the formation. MOWT L07-023-001 has several well preserved gastralia. Many of the gastralia have two or more points of contact with each adjacent gastralium preventing a see-saw motion of the basket. It appears that the entire gastralial basket functioned as a unit. Muscular contractions along the abdominal walls could have elevated the basket during expiration and relaxed during inspiration. Material from MOWT L07-023-001 and from other tyrannosaurs suggest these creatures had several other skeletal elements in the trunk, including ribs, coracoid, sternal elements, and dorsal and sternal ribs. These elements, along with the gastralia, would have completely enclosed the trunk of a tyrannosaur, so the movement of the gastralial basket may have been important for respiration.