The Late Jurassic age Mygatt-Moore Quarry is located in the middle Brushy Basin Member of the Morrison Formation. Located in western Colorado, this quarry has been worked since the early 1980s, producing a large sample of fossil vertebrate material consisting mostly of dinosaurs. The most abundant dinosaur taxon at the quarry is the theropod Allosaurus (29%), which is represented by 6 individuals (5 adults, 1 juvenile); in addition, more than 190 mostly shed teeth of Allosaurus have been recovered from the site. The sauropod Apatosaurus is next most abundant (20%) with 5 individuals known from this site (3 adults, 1 sub-adult, 1 juvenile). Approximately 19% of the sample consists of bones of the ankylosaur Mymoorapelta, mostly osteoderms and lateral spines (2 individuals). The three most abundant sauropods in the Morrison Formation (Camarasaurus, Apatosaurus, and Diplodocus) also are preserved at the Mygatt-Moore Quarry, but unlike within the formation as a whole, at the MMQ Apatosaurus accounts for 85% of the sauropod bones at the site; in the formation overall, Camarasaurus is the most abundant sauropod.
I had the privilege of working at the Mygatt-Moore Quarry in 2007 as the Field Coordinator for the Museum of Western Colorado's Dinosaur Journey Museum in Fruita, Colorado. The majority of these pictures are from the summer of 2007 when we removed a sauropod tibia and several vertebrae (among many other things!). Some of the pictures towards the end of the section are from the end of the 2008 field season as we removed a sauropod vertebra and prepare to remove a sauropod scapulocoracoid.