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Tilia johnsoni
Taxonomy
Tilia johnsoni was named by Wolfe and Wehr (1987). Its type specimen is UW 39712; UCMP 9291 (counter- part), a leaf, and it is a compression fossil. Its type locality is Republic Locality 8428, which is in a Lutetian/Bartonian lacustrine horizon in the Klondike Mountain Formation of Washington.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1987 | Tilia johnsoni Wolfe and Wehr p. 16 |
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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.
†Tilia johnsoni Wolfe and Wehr 1987
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. A. Wolfe and W. Wehr 1987 | Leaf simple; venation perfectly and basally actinodromous, three pairs of lateral primary veins; lamina symmetrical, shape orbiculate, apex acuminate, base cordate; margin serrate to dentate, serration type A-3 to C-3, sinuses curved to broadly angular, spacing regular, first pair of lateral primary veins parallel to medial secondary veins, broadly curving, giving off three external craspedodromous branches that are parallel to next pair of lateral primaries; four pairs of medial secondary veins, shallowly curving, craspedodromous, forking and giving off one or two external branches that may also fork; tertiary veins orthogonal, closely and uniformly spaced, most percurrent; quaternary venation orthogonal, forming a quadrangular to pentagonal reticulum; higher order venation obscure. |