A new species of Cunninghamia (Cupressaceae) from the Upper Cretaceous (Maastrichtian) of Hokkaido, Japan

YAMADA Toshihiro

Department of Earth and Planetary Sciences

Sep. 19, 2024

ナカトンベツコウヨウザンの球果化石の断面（左）と立体復元図（右）

Press release (in Japanese)

Abstract
Cunninghamia nakatonbetsuensis sp. nov. is described as a new fossil-species based on a seed cone from the Upper Cretaceous (Maastrichtian) Heitaro-zawa Formation of the Hakobuchi Group, exposed in Heitaro-zawa, Nakatonbetsu Town, Hokkaido, Japan. This newly discovered species has three seeds per the bract-scale complex, a single robust vascular bundle and a resin canal at the base of the bract-scale complex, and a single row of vascular bundles around the middle of the bract-scale complex. These features are shared with other Cunninghamia species. This new species shares many characters with……

Read the original article on Phytotaxa

Article inforamation
SONGYAO JIANG, YASUNARI SHIGETA, KELLY K. S. MATSUNAGA, TOSHIHIRO YAMADA, A new species of Cunninghamia (Cupressaceae) from the Upper Cretaceous (Maastrichtian) of Hokkaido, Japan, Phytotaxa Vol. 664 No. 1: 3 Sept. 2024
DOI: 10.11646/phytotaxa.664.1.1