"Cryptozoic" meaning in English

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  "etymology_text": "crypto- + -zoic, as any life from the period was considered to be hidden from scientific examination",
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  "lang_code": "en",
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      "glosses": [
        "An eon or other time period before the Cambrian, when the fossils of hard-shelled animals first appeared in the geological record."
      ],
      "id": "en-Cryptozoic-en-name-TBYWNOWg",
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          "eon",
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          "Cambrian",
          "Cambrian"
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        "(archaic, geology) An eon or other time period before the Cambrian, when the fossils of hard-shelled animals first appeared in the geological record."
      ],
      "synonyms": [
        {
          "word": "Precambrian"
        },
        {
          "word": "Pre-Cambrian"
        }
      ],
      "tags": [
        "archaic"
      ],
      "topics": [
        "geography",
        "geology",
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      "translations": [
        {
          "code": "de",
          "lang": "German",
          "sense": "Cryptozoic",
          "tags": [
            "neuter"
          ],
          "word": "Kryptozoikum"
        }
      ]
    }
  ],
  "word": "Cryptozoic"
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  ],
  "etymology_text": "crypto- + -zoic, as any life from the period was considered to be hidden from scientific examination",
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        "An eon or other time period before the Cambrian, when the fossils of hard-shelled animals first appeared in the geological record."
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        "(archaic, geology) An eon or other time period before the Cambrian, when the fossils of hard-shelled animals first appeared in the geological record."
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      "topics": [
        "geography",
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  "synonyms": [
    {
      "word": "Precambrian"
    },
    {
      "word": "Pre-Cambrian"
    }
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  "translations": [
    {
      "code": "de",
      "lang": "German",
      "sense": "Cryptozoic",
      "tags": [
        "neuter"
      ],
      "word": "Kryptozoikum"
    }
  ],
  "word": "Cryptozoic"
}