更新1:
@JazSinc horseshoe crabs and nautilus are cambrian (450-500mya) and living specimines are nearly identical to Ordovician fossils. compare that to the 250mya triassic....... dragonflies are also quite a bit older, but have changed
@JazSinc horseshoe crabs and nautilus are cambrian (450-500mya) and living specimines are nearly identical to Ordovician fossils. compare that to the 250mya triassic....... dragonflies are also quite a bit older, but have changed
收錄日期: 2021-04-24 08:07:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20201019225003AAXiKdJ