Holasteroida is an order of echinoderms. There are 182 species of Holasteroida, in 59 genera and 13 families. It includes groups like Pseudholasteridae, Stenonasteridae, and Hemipneustidae. Dead Holasteroida form shallow marine sediments. They are bioturbators. They have sexual reproduction.
EOL has data for 10 attributes, including: