Discovered: 150-year-old platypus and echidna specimens that proved some mammals lay eggs
Jars of tiny platypus and echidna specimens, collected in the late 1800s by the scientist William Caldwell, have been discovered in the stores of Cambridge’s University Museum of Zoology. At the time of their collection, these specimens were key to proving that some mammals lay eggs — a fact that changed the course of scientific […]