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Drynaria dimorpha
Drynaria dimorpha J.-Y. Wu, B.-N. Sun in J.-Y. Wu, B.-N. Sun, S.-P. Xie, S.-T. Ding, W.-W. Wen Rev. Palaeobot. Palynol., 172: 3. 24 Jan 2012
- Name
- Drynaria dimorpha
- Rank
- Species
- Generic Name
- [Genus] Drynaria
- Authors (Name)
- Wu J.-Y.
Sun B.-N.
- Authors (Pub.)
- Wu J.-Y.
Sun B.-N.
Xie S.-P.
Ding S.-T.
Wen W.-W.
- Publication
- Dimorphic fronds and in situ spores of Drynaria (Polypodiaceae) from the upper Pliocene of Southwest China [2012/1]
- Journal
- Review of Palaeobotany and Palynology
- Volume
- 172
- Page number
- 3
- Year
- 2012
- Fossil Status
- foliage (fertile)
- Stratigraphy
- Neogene
- Strat. comment
- Mangbang Formation
- Location
- Tuantian Town, Tengchong County, Yunnan Province,
China
- Paleoregion
- Eurasia (China)
Data for Holotypus
- Repository
- Institute of Palaeontology and Stratigraphy (LDGSW), Lanzhou University, Lanzhou, China
- Repository Number
- FTP-3108 (A, B)
Data for Paratypus
- Repository
- Institute of Palaeontology and Stratigraphy (LDGSW), Lanzhou University, Lanzhou, China
- Repository Number
- FTP-30928 (Plate I, 4; Plate III, 1, 3, 6), FTP-0488 (Plate I,
5), FTP-21597 (Plate I, 6), FTP-0404 (A, B) (Plate I, 7, 8), FTP-0470
(Plate I, 9), FTP-0147 (Plate I, 10–12), FTP-21540 (Plate II, 1, 2), FTP-
21537 (A, B) (Plate II, 3, 4, 6), FTP-22722 (Plate II, 5, 7), and FTP-0524
- Diagnosis
- Fronds dimorphic. Base frond lobate, proximally auriculate;
margin of lobes serrated, apex acute or obtuse; primary vein
strong and straight; secondary veins zigzagging. Pinnae of foliage
frond fertile or sterile; margin slightly serrated, apex acuminate,
basal part constricted and abruptly broadened; primary vein straight
or slightly curved; secondary veins straight or sometimes zigzagging.
Sori compital and round, symmetrically arranged in one row on either
side of the primary vein; sporangia elliptic. In situ spores monolete
and planoconvex, elliptical in polar view and bean-shaped in equatorial
view; perispores covered with spines and baculae; exospores
display globular excrescences.
