Tentaculite :: Tentaculite (n.) Any one of numerous species of small, conical fossil shells found in Paleozoic rocks. They are supposed to be pteropods..
Tentaculocyst :: Tentaculocyst (n.) One of the auditory organs of certain medusae; -- called also auditory tentacle.
Tentaculum :: Tentaculum (n.) One of the stiff hairs situated about the mouth, or on the face, of many animals, and supposed to be tactile organs; a tactile hair..