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Fertile structures with in situ spores of a dipterid fern from the Triassic in southern China.
- Source :
-
Journal of plant research [J Plant Res] 2015 May; Vol. 128 (3), pp. 445-57. Date of Electronic Publication: 2015 Mar 15. - Publication Year :
- 2015
-
Abstract
- Clathropteris was a typical dipterid fern with well documented fossil record and was widely dispersed during the Mesozoic; however, our knowledge of fertile structures including in situ spores for this genus is still very limited. Here we report well-preserved compression specimens of Clathropteris obovata Oishi from the Late Triassic of Guangyuan, Sichuan Province, China. The specimens show round to oval and exindusiate sori, vertical to oblique annuli in sporangia, and in situ trilete spores with verrucate and baculate sculptures, which are comparable to dispersed spore genera of Converrucosisporites and Conbaculatisporites. Comparisons of relevant fossil taxa suggest that specimens of C. obovata from Triassic of China provide for the first time in Asia the detailed fertile structures with in situ spore characters of dipterid fossil Clathropteris. Unlike living Dipteris, Mesozoic fossils of Dipteridaceae show a high diversity and a range of complex morphology of in situ spores, thus are significant for the evolutionary links between Dipteridaceae and other related fern clade, including Gleicheniaceae and Matoniaceae of the Gleicheniales.
Details
- Language :
- English
- ISSN :
- 1618-0860
- Volume :
- 128
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Journal of plant research
- Publication Type :
- Academic Journal
- Accession number :
- 25773305
- Full Text :
- https://doi.org/10.1007/s10265-015-0708-9