日本産中生代昆虫化石 : とくに上部三畳系美祢層群産昆虫化石の位置づけについて
- Mesozoic insect fossils of Japan: significance of the Upper Triassic insect fauna of the Mine Group, Yamaguchi Pref
This paper reviews occurrence of the Mesozoic insect fossils from Japan. There are twenty insect fossil localities in Japan. Among them, the U pper Triassic Momonoki Formation, Mine Group in Yamaguchi Pref. is the oldest fossil insect bearing formation in Japan, and more than 6,000 specimens exten ding to seven orders, ten families, thirteen genera, and eighteen species have been r ecovered. These specimens (Momonoki specimens) are very important because they show change after the P/T boundary. Abundant Triassic insect fauna are well known fro m the Madygen Formation, Kyrgyzstan, while the fossils are usually distorted by later tectonics there. On the other hand, the Momonoki specimens exhibit better preervational states expect flattening by compaction.
美祢市歴史民俗資料館調査研究報告 33 1-13, 2020-03-31