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Acritodromum
Genus Acritodromum Upchurch, Dilcher Bull. U.S. Geol. Surv., (1915): 36. Dec 1990
- Name
- Acritodromum
- 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
- 36
- Year
- 1990
- Parent Taxon
- [Class] Magnoliopsida
- Fossil Status
- leaves
- Type
- Acritodromum ellipticum
- Diagnosis
- Leaf simple, margin entire and with
structural reinforcement, base acute. Primary venation
pinnate. Secondary venation festooned brochidodromous,
secondary veins irregular in their course and
spacing. Tertiary venation reticulate; tertiary veins also
irregular in course and spacing but showing a definite
tendency to be closely spaced and oriented subparallel to
the midrib, commonly curved or sinuous. Quaternary
venation unbranched to reticulate, quaternary veins
irregular in their behavior.
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