Most fish on Earth today are ray-finned fishes: minnows, anchovies, catfish, bluefish, groupers, flatfish, bonitos, you name ...

In the limestone ranges of Western Australia's Kimberley region, near the town of Fitzroy Crossing, you'll find one of the world's best-preserved ancient reef complexes. Here lie the remnants of ...

The placoderms were a diverse group of ancient armoured fishes and it's widely believed that they are ancestral to virtually all vertebrates alive today, including humans. Placoderms dominated aquatic ...

The antiarch fish, a type of placoderm, was the first species to reproduce by internal fertilization—and it did so sideways, "square-dance style." The fishes' interlocking arms help the male ...

A pregnant fossil fish at the Natural History Museum in London has shed light on the possible origin of sex, according to a new study. Dating from the Upper Devonian period 365 million years ago, the ...

When an Australian scientist uncovered an ancient-looking placoderm skull in the 1960s, he thought he'd cracked the code on an evolutionary mystery. This so-called 'platypus fish,' scientists had ...

These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish to the formidable, pointed teeth of sharks. But fish evolved from toothless ...

Australian researchers have discovered a remarkable 380-million-year-old fossil placoderm fish with intact embryo and mineralized umbilical cord. The discovery makes the fossil the world's oldest ...

As faces go, Entelognathus primordialis isn't much to look at, even for a fish. But consider that the 419 million-year-old, armor-plated fish is the earliest known creature to have what humans might ...

In the limestone ranges of Western Australia’s Kimberley region, near the town of Fitzroy Crossing, you’ll find one of the world’s best-preserved ancient reef complexes. Here lie the remnants of ...