"Branchiostoma" meaning in Conventions internationales

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en grec ancien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en conventions internationales issus d’un mot en grec ancien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms scientifiques",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Conventions internationales",
      "orig": "conventions internationales",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(1834) Du grec ancien, composé de βράγχιον, bránkhion (« branchie ») et de στόμα, stoma (« bouche »)."
  ],
  "hyponyms": [
    {
      "word": "Branchiostoma lanceolatum"
    }
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "name",
  "pos_title": "Nom scientifique",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Poissons en conventions internationales",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en conventions internationales",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Genre de poissons de la classe des Céphalocordés."
      ],
      "id": "fr-Branchiostoma-conv-name-X8t4iJcl",
      "topics": [
        "ichthyology"
      ]
    }
  ],
  "tags": [
    "scientific"
  ],
  "word": "Branchiostoma"
}

{
  "categories": [
    "Compositions en grec ancien",
    "Mots en conventions internationales issus d’un mot en grec ancien",
    "Noms scientifiques",
    "conventions internationales"
  ],
  "etymology_texts": [
    "(1834) Du grec ancien, composé de βράγχιον, bránkhion (« branchie ») et de στόμα, stoma (« bouche »)."
  ],
  "hyponyms": [
    {
      "word": "Branchiostoma lanceolatum"
    }
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "name",
  "pos_title": "Nom scientifique",
  "senses": [
    {
      "categories": [
        "Poissons en conventions internationales",
        "Wiktionnaire:Exemples manquants en conventions internationales"
      ],
      "glosses": [
        "Genre de poissons de la classe des Céphalocordés."
      ],
      "topics": [
        "ichthyology"
      ]
    }
  ],
  "tags": [
    "scientific"
  ],
  "word": "Branchiostoma"
}