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Trochodendron postnastae
Trochodendron postnastae Manchester, Pigg, DeVore Foss. Impr., 74(1-2): 49. 31 Aug 2018
- Name
- Trochodendron postnastae
- Rank
- Species
- Generic Name
- [Genus] Trochodendron
- Authors (Pub.)
- Manchester S. R.
Pigg K. B.
DeVore M. L.
- Publication
- Trochodendraceous fruits and foliage in the Miocene of western North America [2018/8]
- Journal
- Fossil Imprint
- Volume
- 74
- Issue
- 1-2
- Page number
- 49
- Year
- 2018
- Fossil Status
- leaves
- Stratigraphy
- Miocene
- Location
- Moose Mountain flora near Cascadia, Oregon, USA
- Paleoregion
- America (North)
Data for Holotypus
- Repository
- Museum of Paleontology, University of California, Berkeley, USA
- Repository Number
- UCMP 201235
- Diagnosis
- Leaves with stout petioles and elliptical laminae, with length/width ratio 1.9 to 2.7:1. Base of lamina acute to almost right-angle and apex acute. Margin finely serrate in apical 2/3 of lamina, entire with a fimbrial vein in the lower 1/3. Venation pinnate with moderately thick midvein; basally acrodromous with a pair of strongly ascendant basal secondary veins plus 3 to 5 additional
pairs of secondaries arising in the upper 2/3 of the lamina. Secondaries arising at narrow angles from midvein, slightly curved, craspedodromous. Occasional agrophic/pectinal veins arising from the basal secondary veins. Intersecondary veins common. Tertiary and quaternary veins forming a
quadrangular to polygonal mesh and with areoles having branched freely ending veinlets. Teeth simple, rounded to acute, glandular, principal vein entering upper side of tooth. Sinuses angular.
