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Eydeia hokkaidoensis
Eydeia hokkaidoensis Stockey, H. Nishida, B.A.Atk. Amer. J. Bot., 103(9): 2. 2 Sep 2016
- Name
- Eydeia hokkaidoensis
- Rank
- Species
- Generic Name
- [Genus] Eydeia
- Authors (Pub.)
- Stockey R. A.
Nishida H.
Atkinson B. A.
- Publication
- Anatomically preserved fossil cornalean fruits from the Upper Cretaceous of Hokkaido: Eydeia hokkaidoensis gen. et sp. nov. [2016/9]
- Journal
- American Journal of Botany
- Volume
- 103
- Issue
- 9
- Page number
- 2
- Year
- 2016
- Fossil Status
- fruits (endocarps)
- Stratigraphy
- Santonian
- Strat. comment
- Haborogawa Formation
- Location
- Sankebetsugawa (Sankebetsu River bed), Tomamae area, Hokkaido, Japan (44 ° 20 ′ N, 141 ° 55 ′ E)
- Paleoregion
- Eurasia (Japanese Archipelago)
Data for Holotypus
- Repository
- Department of Biological Sciences, Chuo University, Tokyo, Japan
- Repository Number
- 840208 C bot a
Data for Paratypus
- Repository
- Department of Biological Sciences, Chuo University, Tokyo, Japan
- Repository Number
- 840208 C bot b, 832489, 851051, 960051
- Diagnosis
- Fruits pyriform, without apical depression, stylar canal four- to five-armed. Septal ridges and ridges on valve present; septal ridges more pronounced. Central axis with elongate, large diameter sclereids in center. Transition sclereids, one to three layers, between endocarp and mesocarp. Mesocarp lacking sclereids, with outer zone of radially elongate parenchymatous cells, inner zone of smaller cells. At least one vascular bundle parallel to each germination valve ridge between mesocarp and endocarp. Locule lining of one to two rows of longitudinally elongate fibers, square to rectangular in cross section. Seed coat uniseriate with prominent cuticle. Endosperm with copious contents. Cotyledons of embryo flat, closely appressed, with three vascular bundles.
