Ancient proteins resolve controversy over the identity of <i>Genyornis</i> eggshell.

Proc Natl Acad Sci U S A · 2022 · PMC9995833 · PMID 35609205

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highly significantno p-value reported

Their preservation in 50,000-y-old eggshells from warm Australian environments (mean annual temperature = 17 to 17.9 °C, thermal age ∼300 ka) is highly significant: eggshell proteins are firmly established as a reliable source of information for assessing the evolutionary proximity between extant and extinct organisms.

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