"Heterostraci" meaning in Translingual

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      "expansion": "Heterostraci",
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      ],
      "glosses": [
        "A taxonomic subclass within the class Pteraspidomorphi – extinct pteraspidomorph jawless vertebrates that lived primarily in marine and estuary environments."
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          "Pteraspidomorphi",
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  "word": "Heterostraci"
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      "expansion": "Heterostraci",
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  "word": "Heterostraci"
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