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The Echinoid Directory

Family Strongylocentrotidae Gregory, 1900, p. 313

Diagnosis Echinoida with:
  • Ambulacra exclusively polygeminate, with pore-pairs arranged into sickle-shaped arcs;
  • Buccal notches feebly developed;
  • Globiferous pedicellariae with muscular neck (except in Pseudocentrotus)
Range Miocene to Recent, worldwide
Classification and/or Status Camarodonta, Echinidea, Odontophora,