N any of various extinct Cretaceous giant marine lizards of the genus Mosasaurus and related genera, typically having paddle-like limbs 沧龙
Except it's difficult to analyze the genes of the extinct mosasaurs.
分析已经灭绝的沧龙的基因是非常困难的。
Some ammonite fossils have tooth marks that look as though they were made by huge reptilian predators called mosasaurs.
有些鹦鹉螺化石上的齿痕看起来好像是由巨大的爬虫类捕食者沧龙留下的。
Some ammonite fossils have tooth marks that look as though they were made by huge reptilian predators called mosasaurs.
一些鹦鹉螺化石上有牙印，看上去仿佛是巨大爬虫类捕食者比如沧龙留下的。
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