Fossils are the remains or imprints of prehistoric plants or animals. They are found in sedimentary rock (rock formed from sand and mud), coal, tar, volcanic ash, fossilized tree sap or frozen in…
(Encyclopedia) connective tissue, supportive tissue widely distributed in the body, characterized by large amounts of intercellular substance and relatively few cells. The intercellular material, or…
PterodactylusFossilized Pterodactylus featuresPterodactylus profileFlamboyant headsPelican – the modern fish grabberSoaring high above the land-living dinosaurs were the pterosaurs, which means “…
When a fossil arrives in a laboratory, it is usually embedded in a chunk of the rock it was found in. The first job for the specially trained technicians, called preparators, is to free the fossil…
The Nose KnowsAnatomy and PhysiologyThe SensesWindows to the SoulCan You Hear Me Now?The Nose KnowsDon't Be So Touchy! The sense of smell is perhaps one of the most ancient of senses. The ability…
CarnivoreTeethAwesome jawsStereoscopic eyesightLeg musclesModern hunters and scavengersTyrannosaurus profileAvailability of food for scavenging Tyrannosaurus was the biggest, fiercest, most…
Cells, Bells!Anatomy and PhysiologyThe Circulatory SystemCells, Bells!Blood Types and GeneticsNow I Know My WBCs My first introduction to white blood cells was that old sci-fi classic, Fantastic…
(Encyclopedia) rickets or rachitisricketsrəkīˈtĭs [key], bone disease caused by a deficiency of vitamin D or calcium. Essential in regulating calcium and phosphorus absorption by the body, vitamin D…
(Encyclopedia) hip, in human anatomy, the joint separating the thigh bone from the pelvis, and the surrounding flesh. The adult hipbone consolidates three bones separate in youth: the ilium, ischium…
Carnivore’s serrated toothCarnivore’s jaws for tearingCarnivore’s stomachHerbivore’s toothStomach stonesOrnithopod’s stomachFeatures of a sauropod’s stomachCarnivorous and herbivorous dinosaurs are…
