"The [Adventist] church recognizes that the creationist position faces some very difficult problems. . . . There is the problem of the age rings on clamshells. . . . on some fossil clams [these] seem to indicate that these clams were living on the earth 450 million years ago--just as the evolutionists insist they did."1 This quotation is from one of at least two articles 1, 2 in recent Adventist literature that have referred to clam growth rings as a difficult problem for creationists. What are these rings? How are they used in age dating? Are they a serious problem for those who accept the book of Genesis as historically accurate?