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A review of Russian Upper Jurassic ichthyosaurs with an intermedium/humeral contact. Reassessing Grendelius McGowan, 1976статья
Статья опубликована в журнале из списка RSCI Web of Science
Статья опубликована в журнале из перечня ВАКСтатья опубликована в журнале из списка Web of Science и/или Scopus
- Авторы: Zverkov N.G., Arkhangelsky M.S., Stenshin I.M.
- Журнал: Труды Зоологического института Российской академии наук
- Том: 319
- Номер: 4
- Год издания: 2015
- Издательство: Nauka.
- Местоположение издательства: Moskva, Russia (Federation)
- Первая страница: 558
- Последняя страница: 588
- Аннотация: The Upper Jurassic ichthyosaurs, characterized by the intermedium/humeral contact are known from several localities in Europe and North America. However, they are often described either briefly, or based on fragmentary material, resulting in a taxonomic tangle in most overviews. Grendelius McGowan, 1976 was previously synonymized with Brachypterygius Huene, 1922. However, it possesses a number of distinct features: intermedium with wide distally faced facet for distal carpal 3 (faced anterodistally in Brachypterygius and equal in size with distal carpal 4 facet), posterodistal contact of metacarpal 5 with ulnare (distal in Brachypterygius), and absence of postaxial accessory digit (well developed in Brachypterygius). We apply a cladistic analysis to place Grendelius and Brachypterygius in a phylogenetic context. Our analysis recovered Brachypterygius and Grendelius as distinct groups. The clade Grendelius + Otschevia gives us good reason to regard the genus Otschevia Efimov, 1998 as a subjective junior synonym of Grendelius.
- Добавил в систему: Зверьков Николай Геннадьевич