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Acer spitzi
Taxonomy
Acer spitzi was named by Wolfe and Tanai (1987). Its type specimen is UWMG 31272A, 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 spitzi 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 spitzi Wolfe and Tanai 1987
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. A. Wolfe and T. Tanai 1987 | Fruits samaroid ; nutlets at basal end; nutlets 0.7 to 0.8 cm long, 0.5 cm wide, outline broadly oval, expanded slightly proximally, attachment scar 0.4 to 0.6 cm long; nutlet strongly inflated; about 8 obscure, approximately parallel veins on apical half on nutlet; flanges paralleling distal margin of nutlet, placed in distal 1/3 of nutlet, almost fused; attachment angle about 40°, nutlet angle about 30°, Wing entirely apical
to nutlet; 1.8 to 2.2 cm long, 0.8 to 1.0 cm wide, widest in apical 1/3; thickened basally; distal margin broadly convex, proximal margin straight for about 2/3 of length, apex broadly rounded; about 6 coalesced veins along proximal side, wing veins diverging at angles of 10° to 30 °, irregular in course, irregularly bifurcating, anastomoses common, reticulate veinlets present. |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||