Irregularia (Irregular Sea Urchins) is an infraclass of echinoderms. There are 2086 species of Irregular Sea Urchins, in 417 genera and 87 families. It includes groups like Desorellidae, Pygorhytidae, and Pygasteridae. Dead Irregular Sea Urchins form shallow marine sediments. They are bioturbators. They are omnivores. They have sexual reproduction.
EOL has data for 14 attributes, including: