Pterosaur humerus from the Jurassic deposits of Volga Region

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

The described fragment of a pterosaur humerus (presumably from the Upper Jurassic deposits of the Volga Region) is one of the first finds of the Pterosauria in Russia. The humerus is characterized by a weak S-shaped curvature of the shaft, a distally tapering triangular deltopectoral crest, and a pneumatic foramen on the posterior side of the shaft. In terms of the shape of the deltopectoral ridge, this specimen is most similar to the humerus of the gallodactylid Cycnorhamphus suevicus (Quenstedt, 1855) from the Upper Jurassic of Western Europe. This feature, as well as the presence of a pneumatic foramen, allows us to attribute the studied form to Pterodactyloidea.

Негізгі сөздер

Толық мәтін

Рұқсат жабық

Авторлар туралы

A. Averianov

Zoological Institute, Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: dzharakuduk@mail.ru
Ресей, St. Petersburg

A. Lopatin

Borissiak Paleontological Institute, Russian Academy of Sciences

Email: dzharakuduk@mail.ru

Academician of the RAS

Ресей, Moscow

Әдебиет тізімі

  1. Боголюбов Н.Н. О позвонке птеродактиля из верхнемеловых отложений Саратовской губернии // Ежегодник геол. минерал. России. 1914. Т. 16. № 1. С. 1–7.
  2. Аверьянов А.О., Архангельский М.С. Птеранодоны России // Природа. 2021. № 3. С. 30–37.
  3. Хозацкий Л.И., Юрьев К.Б. Надотряд Pterosauria. Летающие ящеры // Основы палеонтологии. Земноводные, пресмыкающиеся и птицы. Москва: Наука, 1964. С. 589–603.
  4. Несов Л.А. Летающие ящеры юры и мела СССР и значение их остатков для реконструкции палеогеографической обстановки // Вестник Ленингр. ун-та, Сер. 7. 1990. Вып. 4. С. 3–10.
  5. Unwin D.M., Bakhurina N.N. Pterosaurs from Russia, Middle Asia and Mongolia // The Age of Dinosaurs in Russia and Mongolia. Cambridge: Cambridge University Press, 2000. P. 420–433.
  6. Barrett P.M., Butler R.J., Edwards N.P., Milner A.R. Pterosaur distribution in time and space: an atlas // Zitteliana. 2008. V. B28. P. 61–107.
  7. Bakhurina N.N., Unwin D.M. A survey of pterosaurs from the Jurassic and Cretaceous of the former Soviet Union and Mongolia // Hist. Biol. 1995. V. 10. № 1. P. 197–245.
  8. Аверьянов А.О. Надотряд Pterosauria // Ископаемые позвоночные России и сопредельных стран. Ископаемые рептилии и птицы. Часть 1. М.: ГЕОС, 2008. С. 319–342.
  9. Alarcón-Muñoz J., Otero R.A., Soto-Acuña S. et al. First record of a Late Jurassic rhamphorhynchine pterosaur from Gondwana // Acta Palaeont. Polon. 2021. V. 66. № 3. P. 571–583.
  10. Unwin D.M., Martill D.M. Systematic reassessment of the first Jurassic pterosaur from Thailand // Geol. Soc. Lond., Spec. Pub. 2017. V. 455. P. 181–186.
  11. O’Sullivan M., Martill D.M., Groocock D. A pterosaur humerus and scapulocoracoid from the Jurassic Whitby Mudstone Formation, and the evolution of large body size in early pterosaurs // Proc. Geol. Ass. 2013. V. 124. P. 973–981.
  12. Wellnhofer P. Handbuch der Palaoherpetologie. Teil 19. Pterosauria. Stuttgart, New York: Gustav Fischer Verlag, 1978. 82 p.
  13. Averianov A.O., Ekrt B. Cretornis hlavaci Frič, 1881 from the Upper Cretaceous of Czech Republic (Pterosauria, Azhdarchoidea) // Cret. Res. 2015. V. 55. P. 164–175.
  14. Bennett S.C. The morphology and taxonomy of the pterosaur Cycnorhamphus // Neues Jahrb. Geol. Paläont., Abh. 2013. V. 267. № 1. P. 23–41.
  15. Claessens L.P.A.M., O’Connor P.M., Unwin D.M. Respiratory evolution facilitated the origin of pterosaur flight and aerial gigantism // PLoS ONE. 2009. V. 4. № 2. P. e4497.

Қосымша файлдар

Қосымша файлдар
Әрекет
1. JATS XML
Жүктеу
2. Fig. 1. Pterodactyloidea indet., ex. PIN, No. 5244/1, right humerus: a – from the dorsal side, b – from the ventral side, c – original label; Russia, Volga region; Jurassic

Жүктеу (224KB)
Метадеректер
3. Fig. 2. Pterodactyloidea indet., ex. PIN, No. 5244/1, right humerus, 3D computer model: a – from the proximal end, b – from the dorsal side, c – from the front, d – from the ventral side, e – from the back, f – from the distal end; Russia, Volga region; Jurassic. Designations: dc – deltopectoral crest, mc – medial crest, pf – pneumatization opening, r – crest for musculature. The blue color indicates a furrow on the ventral side of the bone.

Жүктеу (133KB)
Метадеректер
4. Fig. 3. Pterodactyloidea indet., ex. PIN, No. 5244/1, right humerus: longitudinal (a) and transverse (b–e) sections according to computed tomography; Russia, Volga region; Jurassic

Жүктеу (99KB)
Метадеректер
5. Fig. 4. Contours of the right humerus of Pterosauria from the ventral side: a – Pterodactyloidea indet., ex. PIN, No. 5244/1 (reconstruction); b – Cycnorhamphus suevicus (Quenstedt, 1855); c – Rhamphorhynchus muensteri (Goldfuss, 1831) (b and c – according to [12]). Designations: dc – deltopectoral crest, hh – humeral head, mc – medial crest. Out of scale

Жүктеу (46KB)
Метадеректер

© Russian Academy of Sciences, 2025