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Cunninghamia nakatonbetsuensis
Cunninghamia nakatonbetsuensis S.-Y. Jiang, T. Yamada in S.-Y. Jiang, Shigeta, Matsunaga, T. Yamada Phytotaxa, 664(1): 2. 3 Sep 2024
- Name
- Cunninghamia nakatonbetsuensis
- Rank
- Species
- Generic Name
- [Genus] Cunninghamia
- Authors (Name)
- Jiang S.-Y.
Yamada T.
- Authors (Pub.)
- Jiang S.-Y.
Shigeta Y.
Matsunaga K. K. S.
Yamada T.
- Publication
- A new species of Cunninghamia (Cupressaceae) from the Upper Cretaceous (Maastrichtian) of Hokkaido, Japan [2024/9]
- Journal
- Phytotaxa
- Volume
- 664
- Issue
- 1
- Page number
- 2
- Year
- 2024
- Fossil Status
- cones (seeds)
- Stratigraphy
- Maastrichtian
- Strat. comment
- Heitaro-zawa Formation of the Hakobuchi Group
- Location
- Nakatonbetsu town, Heitaro-zawa Creek, River float at 44.980°N, 142.252°E, 70 m elevation, Hokkaido, Japan
- Paleoregion
- Eurasia (Japanese Archipelago)
Data for Holotypus
- Repository
- National Museum of Nature and Science, Palaeobotany Collection, Tokyo, Japan
- Repository Number
- NSM PP-9178
- Diagnosis
- Seed cone ovoid, ca. 35 mm long and ca. 30 mm wide. Bract-scale complexes swollen to form a mound around the apical third, supplied with a single vascular strand from cone axis, which firstly divides into abaxial and
central adaxial bundles; central adaxial bundle bifurcating once horizontally; abaxial bundle dividing horizontally into 8–10 smaller bundles; 2 lateral adaxial bundles, each branched from abaxial bundle on a lateralmost side; resin canal placed both adaxial and abaxial to the vascular strands. Ovuliferous scale fused to bract except for each lateral margin; apical part trilobed.
