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The Oldest Known Sperm Cells

In another fascinating snapshot from deep time, an international team of paleontologists has reported the discovery of specimens of a minuscule crustacean that dates...

Extinct Sea Scorpions Could Breathe Out of Water

Scientists have long debated the respiratory workings of sea scorpions, but a new discovery by a West Virginia University geologist concludes that these largely aquatic extinct arthropods breathed air on land.

Ancient Bony Fish Forces Rethink of How Sharks Evolved

Sharks' non-bony skeletons were thought to be the template before bony internal skeletons evolved, but a new fossil discovery suggests otherwise.

True Size of Prehistoric Mega-Shark Finally Revealed

A new study led by Swansea University and the University of Bristol has revealed the size of the legendary giant shark Megalodon, including fins that are as large as an adult human.

Graduate Student Names New Trace Fossil Discovered During Coursework

University of Alberta graduate student Scott Melnyk made an intriguing fossil find during a graduate-level course-and ended up identifying the fossilized tracks of a newly discovered wood-boring organism in a new study.

DNA Study Finds That Northern Mastodon Populations Were Less Genetically Diverse and Vulnerable to Extinction

New research suggests that American mastodons were avid travelers, migrating vast distances across North America in response to dramatic climate change during the ice ages of the Pleistocene.

Researchers Shed Light on how to Weigh Dinosaurs

How do you weigh a long-extinct dinosaur? A couple of ways, as it turns out, neither of which involve actual weighing -- but according to a new study, different approaches still yield strikingly similar results.

Scientists Discover Earliest Fossil Evidence of an Insect Lichen Mimic

Scientists have uncovered the earliest known evidence of an insect mimicking a lichen as a survival strategy.

New Cretaceous Jehol Fossil Sheds Light on Evolution of Ancestral Mammalian Middle Ear

A joint research team led by Dr. MAO Fangyuan from the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) of the Chinese Academy of Sciences and Prof. MENG Jin from the American Museum of Natural History has reported a new multituberculate mammal, Sinobaatar pani, with well-preserved middle ear bones.

New Fossil Species Belongs to a Group of Extant Starfish-Like Creatures Living in the Deep Sea Today

Palaeontologists from the Natural History Museums in Luxembourg and Maastricht have discovered a previously unknown species of brittle star that lived in the shallow, warm sea which covered parts of the present-day Netherlands at the end of the Dinosaur Era.

Massive, Well-Preserved Reptile Found in the Belly of a Prehistoric Marine Carnivore

When paleontologists digging in a quarry in southwestern China uncovered the nearly complete skeleton of a giant, dolphin-like marine reptile known as an ichthyosaur, they didn't expect to find another fossil in its stomach.

Ichthyosaur’s Last Meal is Evidence of Triassic Megapredation

Some 240 million years ago, a dolphin-like ichthyosaur ripped to pieces and swallowed another marine reptile only a little smaller than itself.