• Chemical analysis of the Jurassic period fossil teeth from two sauropods -- long-tailed, long-necked dinosaurs that rank among the largest land animals ever to roam the Earth -- showed they were about as warm as most modern mammals. (artdaily.com)
  • Modern endothermic mammals and ectotherms, such as alligators and crocodiles, generally have significant differences in average body temperatures. (pnas.org)
  • He found that over the course of millions of years, crocodiles tended to have longer humerus bones and femur bones than alligators. (nytimes.com)
  • Bird thought that one fragment marked by a large, rounded cup was a partial hip which preserved the socket for the femur, only to discover that the piece was part of the animal's premaxilla - the depression was actually a tooth socket in the frontmost part of the upper jaw! (wired.com)
  • American alligators and American crocodiles aren't the only crocodilians enjoying Florida's sunshine. (mote.org)
  • These three groups are distinguished by characteristics of the teeth and jaw, although all crocodilians are similar with respect to ecology, morphology, and behavior. (encyclopedia.com)
  • For many years, phytosaurs were considered to be the most basal group of Pseudosuchia (crocodile-line archosaurs ), meaning that they were thought to be more closely related to the crocodilians than to birds (the other living group of archosaurs). (wikipedia.org)
  • Modern crocodilians exhibit a similar morphological diversity, for example the broad snouted altirostral alligator and the long snouted dolichorostral gavial . (wikipedia.org)
  • The result was a terrifying skull labeled with the appropriate name Phobosuchus riograndensis - roughly the "terror crocodile from the Rio Grande. (wired.com)
  • Enlightened conservation policies during the 1970's and 1980's brought the alligator back from the brink of extinction, and alligator skins can now be provided to the leather industry from alligator farms and carefully regulated hunting. (digimorph.org)
  • Crocodiles: Their Natural History, Folklore, and Conservation. (wikipedia.org)
  • We show that the abundance of 13 C- 18 O bonds in the carbonate component of tooth bioapatite from modern specimens decreases with increasing body temperature of the animal, following a relationship between isotope "clumping" and temperature that is statistically indistinguishable from inorganic calcite. (pnas.org)
  • The lineage including alligators proper (Alligatorinae) occurs in the fluvial deposits of the age of the Upper Chalk in Europe, where they did not die out until the Pliocene age. (wikipedia.org)
  • Wild alligators were nearly hunted to extinction during this century because of demand for their skin, which can be used as exotic leather. (digimorph.org)
  • Ebenezer's skull has 53 curved, saw-edged, saber-like teeth (up to 4.5 inches long including the roots) that are in various heights, showing different stages of growth. (creationmuseum.org)
  • See also The Visible Alligator Skull website . (digimorph.org)
  • When an animal comes to drink, the crocodile attacks suddenly, dragging the prey down into the water where it is drowned and eaten. (hoglezoo.org)
  • Eagle said his team started with sauropods because their plant-munching teeth were bigger and contained more enamel to work with. (artdaily.com)
  • that portion of the tooth covered with enamel, which is normally visible in the oral cavity. (cram.com)
  • This thermometer constrains body temperatures of bioapatite-producing organisms with an accuracy of 1-2 °C. Analyses of fossilized tooth enamel of both Pleistocene and Miocene age yielded temperatures within error of those derived from similar modern taxa. (pnas.org)