Anserini from the late Miocene of western Mongolia (1 Viewer)

[Fred Ruhe]

Natalia V. Volkova & Nikita V. Zelenkov, 2020

К РАЗНООБРАЗИЮ И МОРФОЛОГИИ ANSERINI (AVES: ANATIDAE) ПОЗДНЕГО МИОЦЕНА ЗАПАДНОЙ МОНГОЛИИ
On the diversity and morphology of Anserini (Aves: Anatidae) from the late Miocene of western Mongolia

Paleontological Journal. 54 in press

Abstract: https://elibrary.ru/item.asp?id=41695143

Описаны ранее не изученные кости гусей (два коракоида и тарсометатарсус) из местонахождения Хиргис-Нур 2 (поздний миоцен Западной Монголии). Впервые отнесенный к Anser devjatkini Kurochkin, 1971 тарсометатарсус указывает на филогенетическую близость этого вымершего вида современным серым гусям; отмеченное ранее сходство с белыми гусями по другим элементам скелета трактуется как плезиоморфное. Морфологический переход от белых к серым гусям сопровождался изменением локомоторных специализаций задней конечности (соотношение адаптации к плаванию и бегу). Два коракоида морфологически отличаются от таковых современных Anser и Branta, но сходны с “Branta” woolfendeni Bickart, 1990 из позднего миоцена Аризоны (США), от которого отличаются крупными размерами. Эти находки представляют отдельный род гусиных, широко распространенный в позднем миоцене Азии и Северной Америки. Обсуждается эволюция и палеогеография гусиных в позднем миоцене. Богатое разнообразие гусиных на местонахождении Хиргис-Нур 2 (не менее 3–4 видов) может объясняться зимовкой этих птиц на крупных водоемах Центральной Азии.

ANSERINI, ЭВОЛЮЦИЯ, ANSER DEVJATKINI, BRANTA WOOLFENDENI, НЕОГЕН, ПОЗДНИЙ МИОЦЕН, МОНГОЛИЯ, EVOLUTION, NEOGENE, LATE MIOCENE, MONGOLIA

When the english version of this paper is there, I will come back on it.

Enjoy,

Fred

 

[Fred Ruhe]

Sorry, I overlooked the English translation of the abstract: https://elibrary.ru/item.asp?id=41695143

New previously unstudied geese bones (two coracoids and tarsometatarsus) are described from the late Miocene locality Khyargas Nuur 2 in Western Mongolia. A tarsometatarsus, previously unknown for Anser devjatkini Kurochkin, 1971, indicates close phylogenetic relationships of this extinct species with modern Grey Geese. Previously noted similarity with White Geese is treated as plesiomorphic. Morphological transition from White to Grey Geese thus was associated with changes in locomotor specialization of the hind limb (swimming versus running adaptations). Two coracoids are different from those in modern Anser and Branta, but are close to “Branta” woolfendeni Bickart, 1990 from the late Miocene of Arizona (USA), from which they differ in their bigger size. These latter finds represent a distinct extinct unnamed genus of geese, which was widespread across Central Asia and North America in the late Miocene. Late Miocene evolution and paleogeography of geese is further discussed. A notable diversity of geese at the Khyargas Nuur locality (at least 3‒4 species) may be explained by wintering of these birds on the large lakes in Central Asia.

Fred

 

[Fred Ruhe]

The paper was published yesterday, March 18th 2020

See:
Paleontological Journal. 54 (1): 73–80.

https://link.springer.com/article/10.1134/S0031030120010128doi:10.1134/S0031030120010128

Fred

 

[Fred Ruhe]

SYSTEMATIC PALEONTOLOGY

Order Anseriformes
Family Anatidae Leach, 1820
Tribe Anserini Vigors, 1825
Genus Anser Brisson, 1760
Anser devjatkini Kurochkin, 1971

Anser devjatkini: Kurochkin, 1971, p. 64, text-fig. 3; 1976, p. 58; 1985, p. 35, pl. III, figs. 1,11; Mlíkovský and Švec, 1986, p. 264; Zelenkov, 2012b, p. 62, pl. X, figs. 3–6, Zelenkov and Kurochkin, 2015, p. 162, pl. XV, figs. 5–7.

Ho l o t y p e. PIN 2614/28, distal end of the right tibiotarsus; Western Mongolia, Uvs (Ubsunur) Province, Hyargas Nuur 2 locality; late Miocene, the upper member of the Hyargas Nuur Formation (Kurochkin,
1971).

R a n g e. Late Miocene and possibly Early Pliocene of Western Mongolia.

F o s s i l ma t e r i a l. Holotype; PIN 3222/42, distal part of left tibiotarsus; PIN 3222/726, proximal fragment of left carpometacarpus; PIN 2614/222, left tarsometatarsus without distal end, all from the type locality Hyargas Nuur 2, Uvs (Ubsunur) Aimag; upper member of the Hyargas Nuur Formation; also PIN 3378/124, distal ends of right humerus, Chono-Harayah locality; Hovd (Hobdos) Aimag; upper member of the Hyargas Nuur Formation; Early Pliocene.

References:

Kurochkin, E.N., Contribution to the avifauna of the Pliocene of Mongolia, Fauna mezozoya i kainozoya Zapadnoi Mongolii (Fauna of the Mesozoic and Cenozoic of Western Mongolia), Trofimov, B.A., Ed., Tr. Sovm. Sov.-Mongol. Nauchno-Issled. Geol. Eksp., vol. 3, Moscow: Nauka, 1971, pp. 58–67.

Kurochkin, E.N., New data on the Pliocene birds from Western Mongolia, Paleontologiya i biostratigrafiya Mongolii (Paleontology and Biostratigraphy of Mongolia), Kramarenko, N.N., Ed., Tr. Sovm. Sov.-Mongol. Paleontol. Eksp., vol. 3, 1976, Moscow: Nauka, pp. 51–67.

Kurochkin, E.N., Ptitsy Tsentralnoi Azii v Pliotsene (Birds of Central Asia in the Pliocene), Tr. Sovm. Sov.-Mongol. Paleontol. Eksp., vol. 26, Moscow: Nauka, 1985.

Mlíkovský, J. and Švec, P., Review of the Tertiary waterfowl (Aves: Anseridae) of Asia, Věst. Čs. Společ. Zool., 1986, vol. 50, pp. 249–272.

Zelenkov, N.V., Neogene geese and ducks (Aves: Anatidae) from localities of the Great Lakes Depression, Western Mongolia, Paleontol. J., 2012b, vol. 46, no. 6, pp. 607–619.

Zelenkov, N.V. and Kurochkin, E.N., Class Aves, Iskopaemye pozvonochnye Rossii i sopredel’nyh stran. Iskopaemye reptilii i ptitsy. Chast’ 3 (Fossil Vertebrates of Russia and Adjacent Countries. Fossil Reptiles and Birds. Part 3), Kurochkin, E.N., Lopatin, A.V., and Zelenkov, N.V., Eds., Moscow: GEOS, 2015, p. 86–290.

Anserini gen. indet. (?Bonibernicla). An almost complete right coracoid (PIN 2614/166) and an incomplete left coracoid (PIN 2614/221) from the Hyargas Nuur 2 locality likely belong to a separate anserine form.

Free pdf: https://www.researchgate.net/public...dae_from_the_Late_Miocene_of_Western_Mongolia

Fred

Fig. 1. Left tarsometatarsus of Anser devjatkini Kurochkin, 1985, specimen PIN 2614/222 from Hyargas Nuur 2 locality (Western Mongolia; upper member of the Hyargas Nuur Formation) in (a) dorsal, (b) ventral, (c) lateral, and (d) proximal views. Scale 1 cm.

E x p l a n a t i o n o f P l a t e 9
Coracoids of fossil anserines from the late Miocene of Western Mongolia (Figs. 1, 2) compared with selected representatives of Anseriformes in (a) ventral, (b) medial, and (c) dorsal views.
figs. 1 and 2. Anserini gen. indet.: (1) specimen PIN 2614/166; (2) specimen PIN 2614/221; Uvs (Ubsunur) Aimag, Hyargas Nuur 2 locality; upper member of the Hyargas Nuur formation.
Fig. 3. Anser anser (L., 1758), recent (specimen from the osteological collection of PIN).
Fig. 4. A. caerulescens (L., 1758), recent (specimen from the osteological collection of PIN).
Fig. 5. Branta leucopsis (Bechstein, 1803), recent (specimen from the osteological collection of PIN).
Scale 1 cm.

 

[Fred Ruhe]

Free pdf:

https://www.researchgate.net/public...dae_from_the_Late_Miocene_of_Western_Mongolia

Fred