给定一篇英文新闻文章的摘要，将其翻译成中文。


摘要：Scientists have discovered a new species of dinosaur that lived millions of years ago in what is now Australia. The species, named Weewarrasaurus pobeni, is a type of small ornithopod that roamed the earth during the early Cretaceous period.
科学家们发现了一种新的恐龙物种，早在几百万年前就在现在的澳大利亚生活。该物种被命名为Weewarrasaurus pobeni，是一种小型鸟脚类恐龙，在早白垩纪时期漫游于地球表面。