The horse fly has but one pair of developed wings, the second pair being represented by a pair of balancers:…
This south American ostrich can not fly, the wings being small; but it is a swift runner, equaling a…
The unicorn is a mythological creature usually depicted as a white horse with a slender horn atop its…
The skeleton of a beaver.(c) cervical region of vertebral column; (d) dorsal region; (b) lumbar region;…
Skeleton of the common Perch. (p) one of the pectoral fins; (v) one of the ventral fins; (a) anal fin,…
Skeleton of a tortoise, seen from below, the plastron having been removed. (ca) carapace.
In the bat, the forelimbs are much longer than the hindlimbs and have several of the fingers greatly…
The Hippopotamus is the river horse of Africa, a genus of a family of ungulates, which contains only…
Arthur is about to be slain by the great Knight Pellinore but as he raises his sword against Arthur,…