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Neuralethopteris sergiorum
Taxonomy
Neuralethopteris sergiorum was named by Goubet et al. (2000) [In 1979, Gillespie and Pfefferkorn described and figured specimens of this form under the name of Neuropteris pocahontas var. inaequalis, but there are strong differences in the two genera.
The species was named in honor of the three paleobotanists, Sergio Archangelsky, Sergius H. Mamay, and Sergi V. Meyen, known as the "three Sergeis," who met in 1979 at the International Carboniferous Congress in Illinois, where preliminary papers on the "proposed Pennsylvanian System stratotype" were presented.].
Synonymy list
Year | Name and author |
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2000 | Neuralethopteris sergiorum Goubet et al. |
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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.
†Neuralethopteris sergiorum Goubet et al. 2000
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Diagnosis
Reference | Diagnosis | |
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P. Goubet et al. 2000 | Pinnules are large and elongated, and are often broadly attached by the proximal side conferring a decurrent aspect. The distal base is rather cordate; the basal part of the pinnules is often asymmetric. N. sergiorum's apex is somewhat acute or rounded, and venation is thin and dense. Although N. sergiorum is very distinct, some of its pinnules resemble N. schlehanii pinnules, hence the assignment of N. sergiorum to the genus Neuralethopteris. |