The course is split into 2 classes, Zoology 107 “Natural History of Vertebrates” (3 units) and Zoology 187 “Vertebrate Natural History Lab” (2 units). The rationale for this change is to retain the total unit value of 5 semester credits at a time when the campus is trying to eliminate all 5-unit courses by giving 1 credit for each lecture hour and only 1 credit for each lab. While the courses were listed separately, all students enrolled in 107 had to concurrently be enrolled in 187.