from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having only two toes, fingers or claws.
- n. A didactyl animal.
from the GNU version of the Collaborative International Dictionary of English
- n. An animal having only two digits.
from The Century Dictionary and Cyclopedia
- Having only two digits, as fingers or toes; two-fingered or two-toed: in the arthropods, applied to limbs which terminate in a forceps or chela. Also bidactyl.
- n. An animal having two toes only on each foot, as the Bradypus didactylus or two-toed sloth.
Sorry, no etymologies found.
A large coprolite IVb unit that may have been produced by Brachyodus onoideus shows a few didactyl imprints.
As depicted in the self-explanatory cartoon below, it's been said that its feet (which are fully didactyl, lacking dew hooves) recall those of giraffes, that the erectile hair patches on its rump resemble those of
T. rex in the postures depicted by Newman (incidentally, Halstead also repeated Newman's idea that tyrannosaurs might have used their short didactyl forelimbs as props when raising themselves from a resting posture).