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Pseudotorellia crista
Pseudotorellia crista J. Horiuchi, K. Uemura Rev. Palaeobot. Palynol., 246: 151. 11 Jun 2017
- Name
- Pseudotorellia crista
- Rank
- Species
- Generic Name
- [Genus] Pseudotorellia
- Authors (Pub.)
- Horiuchi J.
Uemura K.
- Publication
- Paleocene occurrence of Pseudotorellia Florin (Ginkgoales) from Northeast Japan and the Meso–Cenozoic history of Pseudotorellia and Torellia [2017/6]
- Journal
- Review of Palaeobotany and Palynology
- Volume
- 246
- Page number
- 151
- Year
- 2017
- Fossil Status
- foliage
- Stratigraphy
- Paleocene
- Strat. comment
- Minato Formation, Noda Group
- Location
- Coastal cliff at Minato, Noda Village, Iwate Prefecture, Northeast Japan
- Paleoregion
- Eurasia (Japanese Archipelago)
Data for Holotypus
- Repository
- National Museum of Nature and Science, Palaeobotany Collection, Tokyo, Japan
- Repository Number
- NSM-PP 13180a
Data for Paratypus
- Repository
- National Museum of Nature and Science, Palaeobotany Collection, Tokyo, Japan
- Repository Number
- NSM-PP 13179 (Plate I, 1), 13181 (Plates I, 5), 13182
(Plates I, 6), 15001a, d (Plates I, 2, 9)
- Diagnosis
- Leaves entire, lanceolate to oblanceolate, apex obtusely
rounded or rarely acute, base without clear petiole, but slightly thickened.
Veins open dichotomous, converging apically, ending freely near
apical margin.
Leaves hypostomatic. Normal cells on both surfaces rectangular to
elongate rectangular in outline; anticlinal walls thick and strongly sinuous.
Costal and intercostal bands clear on both surfaces. External surface
of the periclinal cell walls of the normal and subsidiary cells on the
lower cuticle show median cuticular ridges. Stomata occurring only in
the intercostal bands, apertures longitudinally oriented. Subsidiary
cells bearing blunt papillae, papillae overarching the stomatal pit, stomatal
pits are frequently filled with a cuticular peg.
