Oldest animal sperm found in 100-million-year-old female seed shrimp

By Christa Lesté-Lasserre

R. Matzke-Karasz

Dozens of perfectly preserved sperm coiled up contained in the reproductive tract of a 100-million-one year-aged feminine microcrustacean were is believed as the oldest animal sperm ever stumbled on.

This puny crustacean (Myanmarcypris hui) had a sexual encounter factual sooner than getting trapped in amber that had flowed from a nearby tree, says Renate Matzke-Karasz at Ludwig Maximilians College in Munich, Germany.

The roughly 50 intact sperm cells nestled contained in the organs of this newly stumbled on species of ostracod – puny …