mustelidæ

from The Century Dictionary.

• noun A family of sharks, typified by the genus Mustelus, having a nictitating membrane, and the small teeth frequently so set as to form a kind of pavement. The group is now commonly regarded as a subfamily of Galeorhinidæ or Carchariidæ. See. cuts under Galeorhinus and Carcharinus.
• noun A family of arctoid fissiped carnivorous quadrupeds of the order Feræ, suborder Fissipedia, and series Arctoidea, typified by the genus Mustela, having only one true molar in the upper jaw, and one or two in the lower jaw, with the last upper premolar normally sectorial.