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Adiantum anastomosum
Taxonomy
Adiantum anastomosum was named by Brown (1940). It is a compression fossil. Its type locality is Steels Crossing, which is in a Bartonian deltaic shale in the Tukwila Formation of Washington.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1940 | Adiantum anastomosum Brown p. 345 |
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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.
†Adiantum anastomosum Brown 1940
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R.W. Brown 1940 | Frond or pinna 10cm or more in diameter, strongly cordate at the base; deeply lobed. Lobes apparently 8, long, narrow, of unequal length, lygodioid in form. Venation without midrib, reticulate, anastomosing freely. Sori on the margins of the lobes narrow, in discontinuous patches. Margin entire. |
Measurements
No measurements are available
No ecological data are available