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Oligosporangiopteris
Genus Oligosporangiopteris Votočk. Frojd., Jun Wang bis, Pšenička, Bek, Opluštil, Libertín Rev. Palaeobot. Palynol., 294(104479): 3. 25 Jun 2021
- Name
- Oligosporangiopteris
- Rank
- Genus
- Authors (Pub.)
- Votočková Frojdová J.
Wang J.
Pšenička J.
Bek J.
Opluštil S.
Libertín M.
- Publication
- A new leptosporangiate fern Oligosporangiopteris zhongxiangii gen. and sp. nov. from the lowermost Permian of Inner Mongolia, China – morphology, anatomy and reproductive organs [2021/6]
- Journal
- Review of Palaeobotany and Palynology
- Volume
- 294
- Issue
- 104479
- Page number
- 3
- Year
- 2021
- Parent Taxon
- [Class] Pteridopsida
- Fossil Status
- foliage (fertile)
- Type
- Oligosporangiopteris zhongxiangii
- Diagnosis
- Xylem strand of petiole and pinnae rachises bar-shaped, slightly curved and having slightly curved lateral ends of xylem, four endarch protoxylem strands on concave side where two protoxylem groups: two situated on lateral ends, and two close to lateral ends of xylem strand; secretory cells/cavity spread out close to outer side of inner cortex; pinnules cladophleboid type; sporangia grouped into sori, oblique annulate, four types of cells distinguished in sporangium; trilete subtriangular microgranulate to reticulate microspores.
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