Crotalocrinites had the ossicles of its arms laterally fused into large, flexible, leaf-like structures, unlike those of any other crinoid. Recently discovered complete specimens give new insights into the ecology of this enigmatic Silurian genus. None of these groups have living representatives today, so their relationships and ecology have to be deduced from related groups and faunas from the same or equivalent beds.
New material helps fill in missing parts of the puzzle.