Thomas F. O'Dea lists steel and animals as anachronistic; argues against the Book of Mormon based on the Jaredites uses swine "despite the Mosaic Law."
Thomas F. O’Dea, The Mormons (Chicago: The University of Chicago Press, 1957), 39
Every commentator on the Book of Mormon has pointed out the many cultural and historical anachronisms, such as the steel sword of Laban in 600 B.C. (I Nephi 4:9) and the use of steel throughout; the finding of horses, cows, oxen, and asses in the New world (I Nephi 18:25) and their possession by the Nephites and Lamanites and also the Jaredites. Some have pointed to the use of swine by the Jaredites despite the Mosaic Law (Ether 9:18).