types:
chelicera
either of the first pair of fang-like appendages near the mouth of an arachnid; often modified for grasping and piercing
mouthpart
any part of the mouth of an insect or other arthropod especially one adapted to a specific way of feeding
fang
an appendage of insects that is capable of injecting venom; usually evolved from the legs
parapodium
one of a pair of fleshy appendages of a polychete annelid that functions in locomotion and breathing
fin
organ of locomotion and balance in fishes and some other aquatic animals
pleopod,
swimmeret
one of the paired abdominal appendages of certain aquatic crustaceans that function primarily for carrying the eggs in females and are usually adapted for swimming
limb
one of the jointed appendages of an animal used for locomotion or grasping: arm; leg; wing; flipper
dactyl,
digit
a finger or toe in human beings or corresponding body part in other vertebrates
toxicognath
either of a pair of poison fangs in the modified front pair of legs of the centipede
hind limb,
hindlimb
a posterior appendage such as a leg or the homologous structure in other animals
forelimb
the front limb (or the homologous structure in other animals, such as a flipper or wing)
flipper
the flat broad limb of aquatic animals specialized for swimming
dorsal fin
unpaired median fin on the backs of fishes and some other aquatic vertebrates that help to maintain balance
pectoral fin
either of a pair of fins situated just behind the head in fishes that help control the direction of movement
pelvic fin,
ventral fin
either of a pair of fins attached to the pelvic girdle in fishes that help control the direction of movement; correspond to hind limbs of a land vertebrate
leg
a human limb; commonly used to refer to a whole limb but technically only the part of the limb between the knee and ankle
crus
the leg from the knee to foot
leg
a structure in animals that is similar to a human leg and used for locomotion
thigh
the part of the leg between the hip and the knee
arm
a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb
cubitus
the arm from the elbow to the fingertips
forearm
the part of the superior limb between the elbow and the wrist
minimus
the fifth digit; the little finger or little toe
finger
any of the terminal members of the hand (sometimes excepting the thumb)
toe
one of the digits of the foot
mandible
either of the two mouthparts used by arthropods to hold and bite food