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Chalkoxylon
Genus Chalkoxylon E.A. Wheeler, McClamm., LaPasha I.A.W.A. J., 16(3): 234. Jan 1995
- Name
- Chalkoxylon
- Rank
- Genus
- Authors (Pub.)
- Wheeler E. A.
McClammer J. U.
LaPasha C. A.
- Publication
- Similarities and differences in dicotyledonous woods of the Cretaceous and Paleocene of San Juan Basin, New Mexico, USA [1995/1]
- Journal
- IAWA Journal
- Volume
- 16
- Issue
- 3
- Page number
- 234
- Year
- 1995
- Parent Taxon
- [Class] Magnoliopsida
- Fossil Status
- stems (wood)
- Type
- Chalkoxylon cretaceum
- Diagnosis
- Wood diffuse-porous. Vessels exclusively solitary; mean tangential diameter 50-150 um, fewer than 25 vessels per sq.mm; perforation plates exclusively scalariform with fewer than 25 bars per perforation plate; vessel-ray parenchyma pits with reduced borders and throughout the contact area. Axial parenchyma apotracheal diffuse. Multiseriate rays less than 6 cells wide and heterocellular, most frequently with fewer than 4 marginal rows. Fibers with distinctly bordered pits.
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