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Penosphyllum
Genus Penosphyllum L.J. Hickey Mem. Geol. Soc. Amer., 150: 139. 19 Jul 1977
- Name
- Penosphyllum
- Rank
- Genus
- Authors (Pub.)
- Hickey L. J.
- Publication
- Stratigraphy and paleobotany of the Golden Valley Formation (Early Tertiary) of Western North Dakota [1977/7]
- Journal
- Memoirs of the Geological Society of America
- Volume
- 150
- Page number
- 139
- Year
- 1977
- Parent Taxon
- [Family] Sterculiaceae
- Fossil Status
- leaves
- Type
- Penosphyllum cordatum
- Diagnosis
- Leaves ovate with broadly to deeply cordate bases, margin entire; venation
pinnate camptodromous with 2 to 3 pairs of secondaries radiating into the basal part of the leaf from the base, or just above the base, of the stout, unbranched primary vein; tertiaries strong, percurrent, arranged tangentially with regard to the point of origin of the primary; the lower ones, recurved into the midvein.
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