American geologist and seminarian George Frederick Wright was originally a leading Christian Darwinist. However reaction against higher criticism in biblical scholarship and the influence of James Dwight Dana led him to become increasingly theologically conservative. By the first decade of the 20th century he joined forces with the emerging fundamentalist movement in advocating against evolution, penning an essay for "The Fundamentals" entitled "The Passing of Evolution". In these later years Wright believed that the "days" of Genesis represented geological ages and argued for the special creation of several plant and animal species "and at the same time endowed them with the marvellous capacity for variation which we know they possess." His statements on whether there had been a separate special creation of humanity were contradictory.