EvolutionJuly 15, 2015
Oldest Animal Sperm Found inside Fossilized Worm Cocoon
The remains of a preserved 50-million-year-old cell may provide clues to the evolution of earthworms and leeches
Stories by Sam Wong
Oldest Animal Sperm Found inside Fossilized Worm Cocoon
The remains of a preserved 50-million-year-old cell may provide clues to the evolution of earthworms and leeches