Tag Archives: Northern fur seal

SEAL, NORTHERN FUR

Under Construction May 2011 NORTHERN FUR SEAL Callorhinus ursinus GUARD HAIR Length: up to 20mm (ASM #3) Diameter Range: 190 microns¬† (Mayer 1952). 100-160 (ASM #3) Variation in width but no shield Medullary Index: 0.5 (ASM #3) Medulla:¬† Mayer (1952) misunderstands the hair and says the medulla is present but fragmentary and occupies less than […]