Crown membership is defined relationally, not by one universally diagnostic fossil character

“Crown membership is defined relationally, not by one universally diagnostic fossil character”是 1 个策展类群档案中使用的描述性性状短语；它不是标准化本体术语或独立同源性判断。

性状短语来自编辑性类群档案；跨类群比较前需要核对标本、定义、同源性和编码尺度。

关联档案1

来源记录3

内容包crocodylomorphs-birds

关联类群

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Late Cretaceous neornithine from Europe illuminates the origins of crown birdsField, D.J.; Benito, J.; Chen, A.; Jagt, J.W.M.; Ksepka, D.T. · 2020 · DOI 10.1038/s41586-020-2096-0
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