Scientists discover world's oldest sperm — and it's huge

Scientists have discovered the oldest fossilized sperm on the geological record, according to a new study published today in the journal Proceedings of the Royal Society B. And not just any old sperm: gargantuan sperm.
A team of paleontologists in Australia came across a pristinely preserved specimen of sperm from an ostracod, a kind of shrimp, in a bat cave in Queensland. The sperm, which scientists suspect was preserved in bat feces, is 17 million years old, and when unwound can reach 10 times longer than the shrimp itself.
"It's staggering," Michael Archer, a leader of the team, told The Washington Post.
Subscribe to The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
Sign up for Today's Best Articles in your inbox
A free daily email with the biggest news stories of the day – and the best features from TheWeek.com
Ryu Spaeth is deputy editor at TheWeek.com. Follow him on Twitter.
-
Scottish hospitality shines at these 7 hotels
The Week Recommends Sleep well at these lovely inns across Scotland
By Catherine Garcia, The Week US Published
-
Scientists invent a solid carbon-negative building material
Under the radar Building CO2 into the buildings
By Devika Rao, The Week US Published
-
Crossword: April 1, 2025
The Week's daily crossword
By The Week Staff Published
-
Dark energy may not doom the universe, data suggests
Speed Read The dark energy pushing the universe apart appears to be weakening
By Peter Weber, The Week US Published
-
Pharaoh's tomb discovered for first time in 100 years
Speed Read This is the first burial chamber of a pharaoh unearthed since Tutankhamun in 1922
By Peter Weber, The Week US Published
-
Scientists report optimal method to boil an egg
Speed Read It takes two temperatures of water to achieve and no fancy gadgets
By Peter Weber, The Week US Published
-
Europe records big leap in renewable energy
Speed Read Solar power overtook coal for the first time
By Peter Weber, The Week US Published
-
Blue Origin conducts 1st test flight of massive rocket
Speed Read The Jeff Bezos-founded space company conducted a mostly successful test flight of its 320-foot-tall New Glenn rocket
By Peter Weber, The Week US Published
-
US won its war on 'murder hornets,' officials say
Speed Read The announcement comes five years after the hornets were first spotted in the US
By Peter Weber, The Week US Published
-
Dark energy data suggest Einstein was right
Speed Read Albert Einstein's 1915 theory of general relativity has been proven correct, according to data collected by the Dark Energy Spectroscopic Instrument
By Peter Weber, The Week US Published
-
New DNA tests of Pompeii dead upend popular stories
Speed Read An analysis of skeletal remains reveals that some Mount Vesuvius victims have been wrongly identified
By Peter Weber, The Week US Published