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Donponoxylon
Genus Donponoxylon Tidwell, B.B. Britt, W.W. Wright Rev. Palaeobot. Palynol., 196: 41. 26 Apr 2013
- Name
- Donponoxylon
- Rank
- Genus
- Authors (Pub.)
- Tidwell W. D.
Britt B. B.
Wright W. W.
- Publication
- Donponoxylon gen. nov., a new spermatophyte axis from the Middle to Late Jurassic of Australia and New Zealand [2013/4]
- Journal
- Review of Palaeobotany and Palynology
- Volume
- 196
- Page number
- 41
- Year
- 2013
- Parent Taxon
- [Phylum] Pinophyta
- Fossil Status
- stems (wood)
- Type
- Donponoxylon bennettii
- Diagnosis
- Complex axes with anomalous secondary growth; pith
large to sometimes absent; stem-like vascular segments surrounded
by concentric secondary xylem development; secondary xylem development
developed more centrifugally; vascular segments may be
ovate, cuneate, or pear-shaped in cross-section; secondary xylem
pycnoxylic; axial parenchyma not observed; tracheid pitting round,
often flattened, uniseriate to biseriate, tangential pitting may be present;
outer secondary vascular segments absent or present, where
present they are variable in size and shape; anastomosing.
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