Elmer S. Riggs Riggs' assistant, H. William Menke, found the first known skeleton of the giant sauropod dinosaur "Brachiosaurus altithorax" from near Grand Junction, Colorado. At the end of the 1900 field season Riggs' found a specimen of "Apatosaurus" near Fruita, a few miles from the Brachiosaurus site. This specimen was excavated during the 1901 field season, and was put on display in 1908 at the Field Museum. From these specimens he named "Brachiosaurus" and Brachiosauridae, and presented evidence that "Apatosaurus" and "Brontosaurus" were the same genus of dinosaur. He also proposed that sauropods were terrestrial animals, based on their limb structure, but
Unthought known unthought known. Bollas also linked the concept to D. W. Winnicott's notion of the true self. In terms of systems-centered therapy, the concept refers to the boundary between "apprehensive" knowing (non-verbal) and "comprehensive" knowing – what we can allow ourselves to formulate in words. In therapy, the unthought known can become the subtext of the therapeutic interchange – the therapist's role then becoming that of picking up and containing (through projective identification) what the patients themselves cannot yet think about. Unthought known Unthought known is a phrase coined by Christopher Bollas in the 1980s to represent those experiences in some