JKKKambriumKatoikogenicKeelLLamellaeLaminaLateralLateral eyesLectotypeLyreLithophileLongitudinalLungLymph (gland)LymphoidLyriformMMacrosetaMandiblesMaxillenMechanoreceptorMedianMedian eyesMesicMesophileMesosomaMetasomaMetasoma Segment carinationMetatypusMicrosetaMicrovilliMitochondriaMovable Finger