Crinoid fossils are most commonly found in limestone deposits that were once ancient seabeds. These fossils often consist of the stalk or column, the most durable part of the crinoid’s anatomy.

Paleontologists have re-discovered a symbiotic marine marriage that was previously thought too have disappeared from fossil record 273 million years ago.

The crinoid was likely from the Palaeozoic era, making it between 250 and 500 million years old. Read more. 38 Percent of Children Think Chicken Nuggets Come From Plants: Study; ...

These crinoids existed on ancient sea bottoms hundreds of millions of years ago -- including in the Greater Cincinnati region. Parasitic Snails with Spines The first example involved gastropods or ...

Rafting crinoids flourished until roughly 180 million years ago, when, some scientists think, the appearance of wood-boring organisms like shipworms drastically curtailed their drifting ways.

The crinoid has between 20 and 22 arms that can reach up to 5.5 inches long, according to the study. The animal’s stalk is shorter than its arms, about 2.5 inches long, researchers said.

Researchers discovered Endoxocrinus kexuei, a new crinoid species, in the South China Sea, living on cold seep habitats over 2,700 feet deep.

Stalked crinoids such as this Endoxocrinus parrae may not be stick-in-the-muds. New research shows movement as fast as 140 meters per hour. Baumiller and Messing ...