IN A. bifida red pigment usually occurs in protein granules in superficial connective tissue and in the eggs. The skeleton is colourless. When freshly detached pinnules are placed on slides and ...

For many years the earliest record of the class Crinoidea was a single late Tremadocian genus. In the past decade, five crinoid genera were described from the early and middle Tremadocian, near the ...

Three Endoxocrinus maclearanus flank a purple sea fan with a snake star at 2000 ft depth in the Bahamas. Image courtesy Bioluminescence 2009 Expedition, NOAA/OER If you didn’t get a chance to follow ...

Burlington's famous fossil may soon get statewide recognition if the Legislature approves a proposal by Democrats to put the crinoid on par with Iowa's goldfinch, rose, geode and oak tree. Seven ...

In present-day ecology, the removal or addition of a predator in an ecosystem can produce dramatic changes in the population of prey species. For the first time, scientists have observed the same ...