讨论中的这枚鹦鹉螺化石是一个业余收藏家的收藏部分,这位收藏家没有意识到它的重大意义。
Romain Vullo of the University of Rennes,
然而,雷恩大学的罗曼?武洛意识到了,
however, didand he has brought the discovery to the attention of the scientific world in thepages of Naturwissenschaften.
而且他已经借《自然科学》杂志成功地让这个发现受到科学界的注意。
Ammonites were both predators and prey.
古鹦鹉螺既是捕食者又是被掠食者。
They occupied a position in the Mesozoic oceans similar to that of modern squid.
他们在中生代海洋中占有一席之地,类似于现代的鱿鱼。
Like squid, they were swimming tentacled molluscsa group called the cephalopods.
它们象鱿鱼一样是游动的触手软体动物,这类软体动物被称为头足类动物。
Unlike squid, though, they had protective shells.
不过,它们不象鱿鱼,它们有起保护作用的壳。
These shells were divided internally into gas-filled chambers.
这些壳的内部划分成许多充气室。
The result had neutral buoyancy, allowing the animal to move by jet propulsion.
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