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Tetracentron atlanticum
Tetracentron atlanticum Grímsson, Denk, Zetter Grana, 47(1): 3. 24 Apr 2008
- Name
- Tetracentron atlanticum
- Rank
- Species
- Generic Name
- [Genus] Tetracentron
- Authors (Pub.)
- Grímsson F.
Denk T.
Zetter R.
- Publication
- Pollen, fruits, and leaves of Tetracentron (Trochodendraceae) from the Cainozoic of Iceland and western North America and their palaeobiogeographic implications [2008/4]
- Journal
- Grana
- Volume
- 47
- Issue
- 1
- Page number
- 3
- Year
- 2008
- Fossil Status
- leaves
- Stratigraphy
- Messinian
- Strat. comment
- Hreðavatn-Stafholt Formation
- Location
- Brekkuá outcrop, close to the lake Hreðavatn, western Iceland
- Paleoregion
- Eurasia (Europe)
Data for Holotypus
- Repository
- Museum, Reykjavík, Iceland
- Repository Number
- IMNH 6894
- Diagnosis
- Leaves petiolate, petiole long, widened at distal part, lamina wide-ovate, base deeply cordate to lobate, primary venation actinodromous, primary and secondary veins forming loops, margin serrate, teeth triangular, tooth acumen glandular, two veins running from gland to adjacent sinus; detached fruits are bilateral symmetric capsules, median axial lineation, apex emarginate, styles originating in lower third of capsule, one style per carpel (fruit originally 4-carpellate); pollen tricolpate, small, prolate to subprolate, tectate, striate to microstriatoreticulate, striate around apertures, open striatoreticulate on mesocolpium, colpus membrane covered with globular elements.
