EntityQ7629472· pop 6· linked from 120 articlesstyletSign in to savehard, sharp, anatomical structure found in some invertebratesConnectionsanatomyEntitystomachEntityInternational Standard Book NumberEntityDipteraEntityOctopodaEntityinvertebrateEntityNematodaEntitydigital object identifierEntitytardigradeEntityaphidEntitycell wallEntitybibcodeEntityNemerteaEntityHandle SystemEntityKalyptorhynchiaEntityCategoriesNematode anatomy