testudinarious

from The Century Dictionary.

• Resembling tortoise-shell in color; mottled with red, yellow, and black, like tortoise-shell.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Zoöl.) Of or pertaining to the shell of a tortoise; resembling a tortoise shell; having the color or markings of a tortoise shell.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective zoology Resembling or pertaining to the shell of a tortoise.