Dinosaurs don't seem to have structures called respiratory turbinates, which are common in endothermic mammals. Since no one can study dinosaurs in the wild, it's unlikely that scientists will find conclusive proof supporting either argument any time soon. T. Rex: Scavenger or Pr...
but they do not present themselves for fertilization until after puberty. This is when ovulation first occurs. During the menstrual cycle, eggs that are maturing and preparing for ovulation are encased in ovarian structures called follicles.
The rods of cells move upward through the skin as new cells form beneath them. As they move up, they're cut off from their supply of nourishment and start to form a hard protein called keratin. This process is called keratinization (ker-uh-tuh-nuh-ZAY-shun). As this happens,the hair...
While the American Alligator is most often associated with "crazy" Florida headlines, such as this tragic case ofa Florida man who lost his armwhile taking a moonlit swim, the reptile is also well-established in eastern Texas. In fact, the American Alligator thrives all along the coast of th...
Just as the name suggests, the snake lives in water. The snake is brown to dark in colour with some black stripes. The snake has rough scales that often form ridges exposing pale skin. The underside of the snake is cream with a tinge of pink to orange. ...
To see these structures, one must view the “scales” at high magnification, ideally with microdroids. I surmise that: (1) these siliceoderms are formed of fused Tatooine sand grains; (2) the grains become embedded into the soft, pliable skin as dewbacks grow, giving them insulation and ...
To see these structures, one must view the “scales” at high magnification, ideally with microdroids. I surmise that: (1) these siliceoderms are formed of fused Tatooine sand grains; (2) the grains become embedded into the soft, pliable skin as dewbacks grow, giving them insulation and ...
Our final jump is to 310 million years ago, back to the Late Pennsylvanian, to the deltaic environment of what is called the Mazon Creek biota, in northern Illinois (Wittry2012). Although vertebrate life exists on land, the reptile-like tetrapods of this period predate any mammal or bird ...
budding, Form of asexual reproduction; growth from mother cell which remains attached to or separates from mother cell.Ccalcareous, Made of calcium.calorie, A heat-measuring unit used in reference to foods.calyx, Sum total of sepals or outermost leaflike structures of a true flower....
Curious microstructure of the small “siliceoderms” from dewback skin that I have described– single ‘derm on the left, multiple ‘derms surrounding a stoma on the right. To see these structures, one must view the “scales” at high magnification, ideally with microdroids. ...