For much of the twentieth century, a prevailing view in marine biology held that most major marine groups originated in ...

This big fella joined our turkey sandwich picnic on the top of Djouce Mountain on our Christmas hike. Is he a common raven?

A research trip to Antarctica uncovered marine life that hadn't been seen before in one of the world's most remote spots.

In 2021, a remarkable new species of brittle star was discovered in the Philippine Sea. It was named Ophiuroglypha fendouzhe ...

In early January 2026, researchers surveying Texas beaches uncovered an unsettling sight: thousands of heart urchin skeletons strewn across miles of sand, turning a rare treasure into a grim carpet ...

The conservation of genome regulatory elements over long periods of evolution is not limited to vertebrates, as previously thought, but also in echinoderms (invertebrates). This is one of the most ...

Ask the publishers to restore access to 500,000+ books. A line drawing of the Internet Archive headquarters building façade. An illustration of a heart shape "Donate to the archive" An illustration of ...

Starfish are some of the most recognisable animals in the world. But their simple appearance belies an evolutionary mystery - how did these animals evolve such an unusual shape? A new fossil discovery ...

Life began on Earth more than 3.5 billion years ago, but the history of humans and other vertebrates accounts for only a fraction of this timescale. Chordates (a group that includes vertebrates) and ...

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DR. H. L. CLARK'S first papers on Australian echinoderms appeared in 1909 when he described the Australian forms in the Museum of Comparative Zoology, and the Thetis collection made off New South ...

FOR some years past Mr. Austin Hobart, Clark has been flirting with the idea that the Echinoderms were derived from the Arthropods, but we all pretended not to notice. Now that he has come into the ...