Fossil experts had long been inclined to agree with the volcanism theory because the disappearance of species in the fossil record appeared to be gradual.
Fossil experts had long been inclined to agree with the volcanism theory because the disappearance of species in the fossil record appeared to be gradual.
化石专家过去一向支持火山说，因为从化石记录来看，物种似乎是逐渐灭绝的。