地球上第一种动物没有骨骼，改变了我们对它们的理解
研究表明，原始的海绵可能是软体的，没有骨骼，这解释了为什么它们的化石直到很晚才出现。通过分析数百个基因并模拟骨骼的演化，科学家发现，矿化的刺在不同海绵物种中独立演化。这种发现重新写了第一批珊瑚礁动物和可能是所有第一种动物的起…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-28 22:50 GMT+8（北京时间）
#海绵 #骨骼 #演化
Post #4214
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