Great limestone series

...It is divided into four fossil zones by trilobite fossils such as Redolimnia. (2) The Great Limestone Series (Late Cambrian to Middle Ordovician) is mainly composed of thick limestone, accompanied by slate and quartzite. Fossils of trilobites, cephalopods, brachiopods, gastropods, bivalves, graptolites, etc. are found in the limestone, and it is divided into 16 fossil zones. ...

*Some of the terms mentioned in the "Great limestone series" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…レドリキアなどの三葉虫化石によって四つの化石帯に分けられる。(2)大石灰岩統Great limestone series(後期カンブリア紀～中期オルドビス紀)は厚い石灰岩を主とし，粘板岩，ケイ岩を伴う。三葉虫，頭足類，腕足類，腹足類，二枚貝，筆石などの化石が石灰岩より産し，16の化石帯に分けられる。…

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