Fossil ostracods on a slide from the collection of the Smithsonian’s National Museum of Natural History. The science team behind the recent Nature paper relied heavily on this collection for their ...

Small bivalved crustacean ostracods are the most abundant fossil arthropods since the Ordovician and play an important role in paleoenvironmental reconstruction and evolutionary biology. The vast ...

The oldest penis ever found is 425 million years old, and belongs to an animal whose scientific name—Colymbosathon ecplecticos—means “astounding swimmer with a large penis.” Large is relative, though.

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Many animals go to extreme lengths to reproduce, developing sex ...

Freshwater ostracods are minute bivalved crustaceans that inhabit virtually all non-marine aquatic habitats, from ephemeral pools and floodplain lakes to groundwater wells. Their carapace morphology ...

Ostracod ovarium with endosymbiotic bacteria (Cardinium) in magenta. Ostracods, sometimes called seed shrimp, are nearly microscopic, aquatic organisms, inhabiting all types of marine and freshwater ...

Evolution is a rich and dynamic process. Species respond to pressures in a variety of ways, most of which reduce to finding food, avoiding becoming someone else’s food and attracting a mate. To solve ...

QUITE recently I received a communication from Mr. J. Omer-Cooper in the course of which he said: “When examining the contents of a frog's rectum yesterday in the course of our lab. work I noticed ...

Researchers at the Marine Biological Laboratory (MBL) have imaged a heritable form of bacterial symbiosis inside the reproductive system of tiny crustaceans known as ostracods. Subscribe to our ...