Century Dictionary and Cyclopedia
- n. A genus of fishes, typical of the family Pterichthyidæ.
GNU Webster's 1913
- n. (Paleon.) A genus of Devonian fossil fishes with winglike appendages. The head and most of the body were covered with large bony plates. See placodermi.
“The shark family have their representative as before; a new variety of the pterichthys spreads out its spear-like wings at every alarm, like its predecessor of the lower formation.”
“Of all the organisms of the system one of the most extraordinary is the pterichthys, or winged fish, which the writer had the pleasure of introducing to the acquaintance of geologists.”
“Next to the pterichthys of the Lower Old Red Sandstone I shall place its contemporary the coccosteus of Agassiz -- a fish which in some respects must have resembled it.”
“Though it required skill to determine the place of the pterichthys and coccosteus there could be no mistaking the osteolepis -- it must have been a fish, and a handsome one, too.”
“As the pterichthys and coccosteus are the characteristic ichthyolites of the Lower Old Red formation, so the cephalaspis distinguishes the middle or coronstone division of the system in England.”
“It appears that in the imperfect condition of the vertebral column, and the inferior situation of the mouth in the pterichthys, coccosteus, &c., there is an analogy to the form of the dorsal cord and position of the mouth in the embryo of perfect fishes.”
“Some of the fossils of this system, -- the cephalaspis, coccosteus, pterichthys, holoptychius -- are, in form and structure, entirely different from any fishes now existing, only the sturgeon family having any trace of affinity to them in any respect.”
“The pterichthys has also strong bony plates over its body, arranged much like those of a tortoise, and has a long tail; but its most remarkable feature, and that which has suggested its name, is a pair of long and narrow wing-like appendages attached to the shoulders, which the creature is supposed to have erected for its defence when attacked by an enemy.”
““It is of the order of ganoids, of the family of the cephalaspidae; and a species of pterichthys.”
“It is of the order of ganoids, of the family of the cephalaspidae; and a species of pterichthys.”
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From the story by Jules Verne.
Crustaceans and insects have multi-purpose appendages. to name a few:
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