中山層

中山層 (増田, 1953) 滝沢ほか, 1984

なかやま

Nakayama Formation (Masuda, 1953) Takizawa et al., 1984

別名 (無効): 中山砂岩泥岩層

分布: 宮城県石巻市南光町 (なんこうちょう) - 日和ヶ丘 (ひよりがおか)
化石: 甲殻類, サンゴ
化石 (貝): Balanus sp., Chlamys kaneharai, Flabellum sp., Macoma incongrua, Mactra sp., Venus sp.
化石 (珪藻): Achnanthes sp., Actinocyclus ingens, Actinoptychus undulatus, Actinoptychus splendens, Arachnidiscus sp., Aulacosira granulata, Auliscus caelatus, Bacillaria paradoxa, Biddulphia? sp., Coccones costata, Cocconeis scutellum, Coscinodiscus marginatus, Cyclotella kützingiana, Cymbella spp., Delphineis surirella, Denticulopsis kamtschatica, Diploneis smithii, Epitheia spp., Eunotia sp., Grammatophora sp., Hyalodiscus sp., Melosira sulcata, Navicula spp., Nitzschia puncata, Nitzschia reinholdii, Paralia sulcata, Rhaphoneis spp., Rhizosolenia spp., Stauroseis sp., Stephanodiscus cf. hantzschii, Stephanopyxis spp., Thalassionema nitzschioides, Thalassiosira zabelina, Thalassiothrix longissima