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Polygnathus rossicus
Taxonomy
Polygnathus rossicus was named by Zhuravlev (2000). Its type specimen is CNIGR Museum 41/13003. Its type locality is Ilmen Lake lower part of Ilmen Beds, which is in a Devonian open shallow subtidal mixed carbonate-siliciclastic/packstone in the Rdeyskoe Formation of the Russian Federation.
Sister species lacking formal opinion data
P. aequalis, P. ancyrognathoideus, P. angustidiscus, P. ansatus, P. aspelundi, P. beckmanni, P. bischoffi, P. brevicarina, P. brevis, P. bryanti, P. bultyncki, P. cracens, P. cristatus, P. duolingshanensis, P. eiflius, P. ensensis, P. eoglaber, P. experplexus, P. glaber, P. hemiansatus, P. inornatus, P. inortata, P. inversus, P. kluepfeli, P. klugi, P. laticostatus, P. latifossatus, P. limitaris, P. micrificus, P. obliquicostatus, P. ovatinodosus, P. paradecorosus, P. partitus, P. patulus, P. perbonus, P. platyobliquemarginatus, P. procerus, P. pura, P. quadratus, P. rarus, P. rhenanus, P. robusticostatus, P. rugosa, P. sagittaria, P. semicostatus, P. serotinus, P. strongi, P. symmetricus, P. tenellus, P. timorensis, P. trigonicus, P. zinaidae
Synonymy list
| Year | Name and author |
|---|---|
| 2000 | Polygnathus rossicus Zhuravlev pp. 716-719 figs. 1, 2 |
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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.
†Polygnathus rossicus Zhuravlev 2000
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. V. Zhuravlev 2000 | The species of "Polygnathus" characterised by septimembrate apparatus having Pa elements with flat asymmetrical lanceolate platform, high fused carina and strongly denticulated posterior free blade; Bryantodus-like Pb elements strongly arched and bowed. |