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Ulmus okanaganensis
Taxonomy
Ulmus okanaganensis was named by Denk and Dillhoff (2005). Its type specimen is UWBM 97766, a multi organs (Leaves, twigs, flowers, fruits), and it is a compression fossil. Its type locality is McAbee (UWBM coll), which is in a Ypresian lacustrine - large mudstone in Canada.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2005 | Ulmus okanaganensis Denk and Dillhoff pp. 1665-1666 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Ulmus okanaganensis Denk and Dillhoff 2005
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. Denk and R. Dillhoff 2005 | Leaf blade oblong–elliptic to (narrow) ovate, petiolate, base cordate, asymmetric or equal, sometimes auriculate, apex acute, margin simple to double serrate, teeth triangular, tooth apex blunt to acute, basal and apical side convex, sigmoid, or straight, rarely concave, primary vein straight, thick, secondary veins simple or branched, abmedial branches of secondary veins 1–3, secondaries and abmedial
veins inserting teeth, tertiary veins perpendicular to secondary veins, percurrent or branching; fertile twigs distichous displaying a zigzag course, leaves alternate, nodes swollen, flower fascicles with numerous flowers in axils of leaves of the current year, occurring together with the leaves, fruits with pedicels, no pedicel articulation visible, endocarps small, without wings, elliptic–obovate, with two persistent styles, perianth lobed, small. |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||
Age range: Ypresian or 56.00000 to 47.80000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ypresian | USA (Washington) | Ulmus okanaganensis (147822) | |
| Ypresian | Canada (British Columbia) | Ulmus okanaganensis (119896 type locality: 147813 224003 227820 227994) | |
| Eocene | Canada (British Columbia) | Ulmus okanaganensis (32896) |