REVISION OF DANIELSSENIA AND PSAMMIS 



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r ig. 13 Distribution map of Danielssenia sibirica (circles) and D. stefanssoni (stars). Records of 1. Sars (1898); 2. Yashnov (1935); 3. Wells 

 (1965); 4. Willey (1920); 5. Jespersen (1939); 6. Wilson (1966). Arctic Circle shown by dashed line. 



