MONGOLIA

MONGOLIA / МОНГОЛ УЛС

Protected Fauna in Mongolian Wildlife Reserves.
Bulgan Gol National Park and Eurasian Beaver (Castor fiber).
Second stamp in a set of 7, issued on 30.09.1974.
Face value: 20 Mongolian mïngö.
Printing: Offset lithography.
Size: 60 x 40 mm.

Catalogs
- Michel No. 888.
- Scott No. 796.
- StampWorld No. 880.
- Stanley Gibbons No. 853.
- Yvert et Tellier No. 739.

Bulgan Gol National Park (Mongolian: Булган Гол), in western Mongolia near the Chinese border, is centered on the Bulgan River (Chinese: Ulungur, 乌伦古河), which divides into many meandering streams, lakes, and wetlands as if flow through the valley in the park. The area is an important stopover for migratory birds; Species in the park include the vulnerable eastern imperial eagle (Aquila heliaca), the lesser kestrel (Falco naumanni), and the Eurasian beaver (Castor fiber, depicted on the stamp). The Bulgan River, about 700 km (435 mi) long, originates in the Altai Mountains, and flows westward into Ulungur Lake in Xinjiang, China. The national park, established in 2011, covers an area of 2,461 km² (950 sq mi).

POLAND

POLAND / POLSKA.

Polish scientific expeditions.
Paleontological expeditions to Mongolia between 1963 and 1971. Small simplified map of Mongolia.
Last stamp in a set of 6, issued on 22.05.1980.
Face value: 8.40 Polish złotych.
Design: H. Matuszewska.
Printing: Photogravure.
Print: 1,300,000 copies.
Size: 55.2 x 32.6 mm.

Catalogues
- AFA No. 2577.
- Fischer No. 2543.
- Michel No. 2691.
- Scott No. 2395.
- StampWorld No. 2692.
- Stanley Gibbons No. 2677.
- Yvert et Tellier No. 2508.

These were two important scientific expeditions, the first between 1963 and 1965, and the second between 1967 and 1971, both sponsored by the Polish Academy of Sciences and led by the prominent paleobiologist Zofia Kielan-Jaworowska (1925-2015) in collaboration with the naturalist Naydin Dovchin of the Mongolian Academy of Sciences. Her work allowed the discovery of numerous remains of prehistoric animals under the sands of the Gobi desert, among which that of the first Deinocheirus know and a a Protoceratops and a young Velociraptor entangled in a fight, a position in which they were surprisingly fossilized. For additional information, see here.

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Thanks to Sylvester Dulewski for his contribution (https://birdsposta.blogspot.com/).