Using advanced imaging techniques, an international research team has reconstructed an ancient extinct fish ’s heart, brain, ...

An international team led by scientists from the Canadian Museum of Nature and the University of Chicago reconstructed the ...

Chance discovery of 365-million-year-old fossil reveals new species - The large fish, spanning nearly a metre on the lake bed, lived in waters thick with rival fish, including giants several times its ...

A fish called Endeiolepis had gills that closely resemble those of modern jawless fish such as the lamprey, the team reports in Thursday's issue of the journal Nature.

Armored jawless fish like Astraspis and Eriptychius and ancient arthropods like Anatolepis coexisted in the muddy shallow seas of the Ordovician period, which occurred between 485.4 million and ...

This advertisement has not loaded yet, but your article continues below. Fish first appeared roughly 520 million years ago. These earliest fish were jawless, as are modern lampreys and hagfish.

In jawless fish called lampreys, the liver is squashed against the heart and envelops it from behind. The placoderms displayed a heart-liver separation like modern jawed vertebrates. Advertisement 4 ...

Scientists have long suspected all jawless vertebrates once had gill pouches, but until now there was little fossil evidence to support the idea. Detailed view showing impressions of gill structures.

Armoured jawless fishes had dwindled by the Late Devonian Period (419.2-358.9 MA), but the rest were still diverse. Actinopterygians were still restricted to a few species with similar body shapes.

Armored jawless fish like Astraspis and Eriptychius and ancient arthropods like Anatolepis coexisted in the muddy shallow seas of the Ordovician period, which occurred between 485.4 million and ...

These earliest fish were jawless, as are modern lampreys and hagfish. At the time when the newly identified species lived, the largest marine predators were sea scorpions reaching 2.5 metres long.

The fossil they found belonged to a fish that had died 350 million years ago, its bony husk spanning nearly a metre on the lake bed. The large fish had lived in waters thick with rival fish, including ...