| 词条 | Ashizawa Formation |
| 释义 |
| name = Ashizawa Formation | image = | caption = | type = Geological formation | age = Coniacian | period = Coniacian | prilithology = | otherlithology = | namedfor = | namedby = | region = northern Honshu | country = {{flag|Japan}} | coordinates = | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }} The Ashizawa Formation is a Mesozoic geologic formation in northeastern Honshu, Japan. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[1] A jawbone belonging to a therian mammal has also been discovered from this unit.[2] See also{{Portal|Earth sciences|Paleontology|Dinosaurs||}}
Footnotes1. ^Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607. 2. ^Kusuhashi, N., Suzuki, T., Terui, K., Sato, A., and Amiot, R. (2016) A Late Cretaceous mammalian dentary from the Ashizawa Formation (Futaba Group), Fukushima, northeastern Japan. Island Arc, 25: 403–409. doi: 10.1111/iar.12133. References
2 : Geologic formations of Japan|Coniacian Stage |
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