Ancient RNA expression profiles from the extinct woolly mammoth https://www.cell.com/cell/fulltext/S0092-8674(25)01231-0
"Here, we report transcriptional profiles from 10 Late Pleistocene woolly mammoths. One of these, dated to be ∼39,000 years old, yielded sufficient detail to recover tissue-specific regulatory mechanisms and biological functions essential for skeletal muscle metabolism, representing the oldest ancient RNA sequences recorded to date. "