query: SELECT ?species ?taxonname ?speciesLabel ?gestationBasePeriod ?gestationUnitPeriod ( ?gestationBasePeriod * ?gestationUnitPeriod / 86400 AS ?days) WHERE {
      ?species p:P3063/psv:P3063 [
        wikibase:quantityAmount ?gestationBasePeriod;
        wikibase:quantityUnit [
          p:P2370/psv:P2370 [
            wikibase:quantityAmount ?gestationUnitPeriod;
            wikibase:quantityUnit wd:Q11574
          ]
        ]
      ].
    ?species wdt:P225 ?taxonname .
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  }