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Densinervum
Genus Densinervum Upchurch, Dilcher Bull. U.S. Geol. Surv., (1915): 17. Dec 1990
- Name
- Densinervum
- Rank
- Genus
- Authors (Pub.)
- Upchurch G. R., Jr.
Dilcher D. L.
- Publication
- Cenomanian angiosperm leaf megafossils, Dakota Formation, Rose Creek locality, Jefferson County, southeastern Nebraska [1990/12]
- Journal
- Bulletin of the United States Geological Survey
- Issue
- 1915
- Page number
- 17
- Year
- 1990
- Parent Taxon
- [Order] Laurales
- Fossil Status
- leaves
- Type
- Densinervum kaulii
- Diagnosis
- Lamina entire margined; margin with
mechanical reinforcement; petiolar region distinct from
lamina. Primary venation pinnate; primary vein moderate.
Secondary venation "festooned" brochidodromous;
secondary veins thin relative to the primary vein,
enclosing exmedially elongate intercostal regions that are
much longer than broad. Intersecondary veins common,
arising from the primary vein or the exmedial sides of
secondary veins, typically branching to form tertiary
veins. Tertiary venation both reticulate and ramified,
irregular, tending to enclose regions elongate parallel to
the secondary veins. Quaternary venation irregularly
reticulate; quaternary veins often curved.
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