Paragnathus n. : One of the two lobes which form the lower lip, or metastome, of Crustacea.

Paragnathus n. : One of the small, horny, toothlike jaws of certain annelids.

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Taxonomy
symptoms, treatments, Diagnosis, diseases, Search, Misdiagnosis, organ, wrongdiagnosis, Research, lower jaw, Checklist, Symptom Checker, Health Center, Medical Articles, mistakes, Search Specialists, Diseases Center, Heart disease.

Defination from the web:
Paragnathus information including symptoms, causes, diseases, symptoms, treatments, and other medical and health issues. ... Paragnathus: In the diphthong gn, the g is silent only at the beginning of a word. ( 1) A developmental defect resulting in an individual with an accessory lower jaw. ...