Life
16 September 2020
By Christa Lesté-Lasserre
R. Matzke-Karasz
Dozens of perfectly preserved sperm coiled up inside the reproductive tract of a 100-million-year-old female microcrustacean have been identified as the oldest animal sperm ever found.
This tiny crustacean (Myanmarcypris hui) had a sexual encounter just before getting trapped in amber that had flowed from a nearby tree, says Renate Matzke-Karasz at Ludwig Maximilians University in Munich, Germany.
The roughly 50 intact sperm cells nestled inside the organs of this newly discovered species of ostracod – small …
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