Almost complete skeletonDinosaur toothMissing skullMummified dinosaursPalaeontologists can have a hard time finding and identifying dinosaur fossils because they are usually embedded in stone.…
(Encyclopedia) Howlin' Wolf, 1910–76, African-American blues singer and composer, b. White Station, Miss., as Chester Arthur Burnett. Exposed to blues performers from childhood, he sang locally and…
Deadly embraceCannibalCancerous growthLife expectancyFew dinosaurs reached old age. These creatures were constantly at risk from the environment and from other animals. Many dinosaur species are…
(Encyclopedia) amputationamputationămˌpyətāˈshən [key], removal of all or part of a limb or other body part. Although amputation has been practiced for centuries, the development of sophisticated…
(Encyclopedia) arm, upper limb in humans. Three long bones form the framework of the arm: the humerus of the upper arm, and the radius (outer bone) and ulna (inner bone) of the forearm. The radius…
(Encyclopedia) spleen, soft, purplish-red organ that lies under the diaphragm on the left side of the abdominal cavity. The spleen acts as a filter against foreign organisms that infect the…
Growth ringsComplete babyStages of growthSome of the most exciting fossil finds over the last fifty years have been those that have something to do with young dinosaurs – their nests, eggs, or…
Can You Hear Me Now?Anatomy and PhysiologyThe SensesWindows to the SoulCan You Hear Me Now?The Nose KnowsDon't Be So Touchy! There is an elegant, mechanical simplicity to sound. Sound is…
Head bangersFive-horned face with frillsRutting stagsHead crest for courtingAll animals must reproduce themselves if their species is to survive. Today’s animals have developed their own special…
WHAT ARE INVOLUNTARY MUSCLES?HOW DO MUSCLES WORK WITH BONES? MUSCLE FIBERSFIND OUT MOREBody movement is brought about by muscle, a tissue that can contract. There are three main types: skeletal…
