化石大部分在英国的威尔斯被发现,但是在中国也发现过牠们的化石(Morganucodon oehleri)。对于摩尔根兽是否属于哺乳类,生物学家有很长的争论,有时牠们会被归入哺乳形类(Mammaliaformes)。
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化石寻找者们挖掘出了一头被认为有50万年之久的大象遗骨。
Fossil hunters have unearthed the bones of an elephant believed to be 500,000 years old.
在埃及沙漠中挖掘时,古生物学家们发现了巨大的骨骼化石,这似乎是有史以来体型第二大的恐龙。
While digging in the Egyptian desert, huge fossil bones have been found by paleontologists, which appears to have been the second most massive dinosaur that ever lived.
盖格尔和她的同事们研究了3200年前的骨头化石,这些骨头属于一种已经灭绝的叫做欧洲野牛的种类。
Geigl and her colleagues looked at 3200-year-old fossil bones belonging to a single individual of an extinct cattle species called an aurochs.
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