A team of Oakland University researchers has published the first complete mitochondrial genome of Diadema antillarum, commonly known as the long-spined sea urchin. The invertebrate marine ...

In most Ordovician fossils ... which resemble long-legged centipedes with sea-urchin spines; and Opabina, which have five eyes and a long nose with a claw on the end. More fossils revealing ...

Ordovician reefs were also home to large sea lilies, relatives of sea stars. Anchored to the bottom inside calcareous tubes, they collected food particles with feathery arms that waved in the ...

Purple sea urchin population is up 10,000% in recent years, and they pose a serious risk to kelp forests. They’re also delicious. Purple sea urchins are recognizable by their spiny bodies and ...

This rare Ordovician sea scorpion from Zhejiang Province, along with continuous discoveries of eurypterid fossils in China, indicates that there is great potential for exploration of eurypterids ...

As coral reefs struggle to adapt to warming waters, high levels of pollution and sea-level rise, ballooning sea-urchin populations are threatening to push some reefs in Hawaii past the point of ...

Add articles to your saved list and come back to them any time. When threatened by predators, the collector sea urchin releases a terrifying counter-attack. A small cloud of detached venomous jaws ...

When we visited, a lone young sea urchin remained in the tanks that once hosted dozens. But these creatures are the kind that can only survive in large numbers. “When you see an individual ...

A team of Earth scientists affiliated with several institutions in France, working with a colleague from Norway, has developed a model to help explain the advent of the Great Ordovician ...