Echinoderms, such as starfish, sea urchins and sea lilies, use small, flexible, tubular projections called "tube feet" for ...

University of Oklahoma paleontologists recently discovered a 450-million-year-old fossilized soft tissue from a species related to the starfish, a finding that is one of two known examples of this ...

Scientists think gigantic crinoids would cling to logs with anchor-like stems, creating a floating raft that likely supported a host of other species and enabled their long-distance transport across ...

Crinoids were among the most abundant marine benthic animals throughout the Palaeozoic, but their body size evolution has received little attention. Here, we compiled a comprehensive database on ...

Officials say an extraordinarily rare discovery has been made by a University of Oklahoma palentologistBefore the oldest dinosaur, before animals or even plant ...

Japanese researchers recently set a record with the deepest in-situ observation of a criniod. In the words of the authors, Previous records of stalked crinoids from hadal depths (exceeding 6000 m) are ...

An unusual fossil find is giving scientists new ideas about how some of the earliest animals on Earth came to dominate the world's oceans. An unusual fossil find is giving scientists new ideas about ...

A new discovery suggests why one relationship evolved in appearance and how one parasite turned more aggressive but also protective toward its host over millions of years. Finding parasites on fossils ...

The Devonian period ended with one of the largest mass extinctions in the Earth history. It comprised a series of separate events, which eliminated many marine species and led to long-term ...

A video has caught an underwater animal, which looks like a flower, practically jogging along the ocean bottom. The stalked crinoid spends most of its time sitting and catching food with the ...