In SD, that is the Lance Formation though it is geologically the same.   Troodon is still valid, as stated by https://www.nature.com/articles/s41598-018-30085-6 I do agree though that the ceratopsian tooth cannot be given an ID beyond Triceratops sp. as the teeth of each are very similar.  @Sonic0627 Can you get images of the theropod tooth with a scale bar?  The size of the tooth, the size of its serrations and such, all are important when trying to ID a tooth.