单词 | Ostracoda |
释义 | Ostracodaplural noun Os·tra·co·da ˌästrəˈkōdə, äˈstrakədə : a subclass of crustacea comprising small active mostly freshwater forms having the body enclosed in a bivalve shell composed of right and left valves, the body segmentation obscured, the abdomen rudimentary, and only seven pairs of appendages ostracodan -dᵊn ostracodous -dəs |
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