In Siluria, he understood, Sir Roderick Murchison called the horseshoe a Limulus, which helped nothing.

据他了解，在志留纪，罗德里克·默奇森爵士将马蹄铁称为鲎， 这毫无用处。

When the vertebrate vanished in Siluria, it disappeared instantly and forever.

当脊椎动物在志留纪消失时， 它立即永远消失了。

Friends are born in archaic horizons; they were shaped with the Pteraspis in Siluria; they have nothing to do with the accident of space.

朋友生于古老的地平线；它们的形状与志留纪的翼龙相似；它们与空间事故无关。