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Acer wehri
Taxonomy
Acer wehri was named by Wolfe and Tanai (1987) [Synonymy
Acer negundoides auct. non MacGinitie. Brown. 1935 (part: reference to Republic material). 580.
Acer oregonianum auct. non Knowlton . Berry. 1929 (part: reference to Republic material). 255.]. Its type specimen is UWBM 39728 A&B, a seed/fruit (Samara), and it is a compression fossil. Its type locality is Republic, UWBM locality A0307, which is in a Ypresian lacustrine - large mudstone in the Klondike Mountain Formation of Washington.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1987 | Acer wehri Wolfe and Tanai |
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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.
†Acer wehri Wolfe and Tanai 1987
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. A. Wolfe and T. Tanai 1987 | Fruits samaroid; nutlet at basal end; nutlets 0.5 to 0.7 cm long, 0.5 to 0.7 cm wide, outline broadly triangular, apex rounded, attachment scar 0.5 to 0.7 cm long with conspicuous distal keel, nutlet slightly inflated; about 10 approximately parallel and obscure veins in apical 1/2 of nutlet, extending onto wing; broad flange over 1/2 width of nutlet basally and narrowing apically; attachment angle 50° to 55 °, nutlet angle 30° to 40 °. Wing extending along apical 1/3 to 1/2 of distal side of nutlet, forming a broadly U-shaped sulcus, 2.0 to 2.5 cm long, 0.8 to 1.0 cm wide, widest in apical 1/3; distal margin broadly convex, proximal margin straight apex narrowly rounded; veins from nutlet coalescing after passing onto wing along proximal side, then diverging at angles of 10° to 30°, dichotomizing 3 to 5 times, numerous
anastomoses. |
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 (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ypresian | Canada (British Columbia) | Acer wehri (119896 224003 228806) | |
| Ypresian | USA (Washington) | Acer wehri (type locality: 104761) | |
| Eocene | Canada (British Columbia) | Acer wehri (179231) |