Plates of the Dinosaur Stegosaurus: Forced Convection Heat Loss Fins?

  title={Plates of the Dinosaur Stegosaurus: Forced Convection Heat Loss Fins?},
  author={James O. Farlow and Cosette Thompson and Daniel E. Rosner},
  pages={1123 - 1125}
It is suggested that the plates along the arched back and tail of Stegosaurus served an important thermoregulatory function as forced convection "fins." Wind tunnel experiments on finned models, internal heat conduction calculations, and direct observations of the morphology and internal structure of stegosaur plates support this hypothesis, demonstrating the comparative effectiveness of the plates as heat dissipaters, controllable through input blood flow rate, temperature, and body… Expand
Aerodynamics and thermoregulatory function of the dorsal sail of Edaphosaurus
Wind tunnel modeling of air flow over a thin sail with laterally projecting cross-bars supports a thermoregulatory interpretation of the sail of Edaphosaurus, and measurements of heat flow in an instrumented model show that cross- Bars increase heat loss from the sail. Expand
Biophysical constraints on the thermal ecology of dinosaurs
A physical, model-based approach to body temperatures in dinosaurs allows us to pre- dict what ranges of body temperatures and what thermoregulatory strategies were available to those dinosaurs. WeExpand
Skeletal and dermal armor reconstruction of Euoplocephalus tutus (Ornithischia: Ankylosauridae) from the Late Cretaceous Oldman Formation of Alberta
Previously life reconstructions of ankylosaurid dinosaurs are incorrect in that they show uniformly shaped keeled plates arranged in neat longitudinal and transverse rows, and large spines projectingExpand
Do paleontologists dream of electric dinosaurs? Investigating the presumed inefficiency of dinosaurs contact incubating partially buried eggs
Results from this experiment provide evidence for a possible evolutionary path from guarding behavior to thermoregulatory contact incubation in Troodon formosus, and show that contact incubating partially buried eggs did seem to confer an energetic advantage. Expand
The hypothetical dinosaur analyzed was a homeothermic animal, although it owed its homeothermy to its great thermal inertia, and had no chance of survival under the conditions of the warm, constant middle Mesozoic climate. Expand
Evaluating combat in ornithischian dinosaurs
Ornithischia, a diverse clade of herbivorous dinosaurs, has numerous members with structures hypothesized to function in combat, and three main lines of evidence support analogy with modern animals; biomechanical analysis and simulation; and paleopathology. Expand
Growth and function of Stegosaurus plates; evidence from bone histology
Histological examination of Stegosaurus dorsal bony plates shows a thin wall of incompletely remodeled bone surrounding a large cancellous region containing some large “pipes” delineated by thin bonyExpand
The study of dinosaurs has always been hindered by a body of unsubstantiated or false beliefs about their biology, and about the biology of other animals that can be applied to dinosaurs. Some ofExpand
Stegosaurian Dinosaurs from the Bathonian(Middle Jurassic) of England, the earliest record of the family Stegosauridae
Abstract The earliest records of stegosaurian dinosaurs of the family Stegosauridae are a few isolated bones from the Bathonian (Middle Jurassic) of southern England. A massive femur of a juvenileExpand
Internal vascularity of the dermal plates of Stegosaurus (Ornithischia, Thyreophora)
X-ray computed tomography and petrographic thin sectioning were used to study internal features of the plates of the thyreophoran dinosaur Stegosaurus and the osteoderms of Alligator. InfraredExpand


Anatomical Evidence for a Counter-current Heat Exchanger in the Leatherback Turtle (Dermochelys coriacea)
FRAIR et al.1 have recently given strong circumstantial evidence that leatherback turtles (Dermochelys coriacea) can maintain a deep body temperature at least 18° C higher than the ambientExpand
Body temperature of dinosaurs and its relationships to their extinction
As dinosaur skeletons resemble those of birds, the soft parts may also have been similar. Hence dinosaurs may have had separate arterial and venous circulations and may have been to some extentExpand
Mako and porbeagle: warm-bodied sharks.
Highly developed countercurrent heat exchangers located in the vascular system of Mako and porbeagle sharks form a thermal barrier which prevents heat from being carried off by the circulating blood and lost in the gills. Expand
Temperature and the Galapagos marine iguana--insights into reptilian thermoregulation.
  • F. White
  • Biology, Medicine
  • Comparative biochemistry and physiology. A, Comparative physiology
  • 1973
Marine iguanas regulate core temperature under increasing thermal loads using a ventrally located heat sink and associated cardiovascular changes allow construction of a model which deficits the animal as a regulated “heat shunt”. Expand
A Mathematical Model for Body Temperatures of Large Reptiles: Implications for Dinosaur Ecology
These calculations show that a large reptile would have a relatively constant high body temperature when exposed to warm, diurnally fluctuating environmental conditions, even with a low metabolic rate, as long as the average values of the physical parameters result in a body temperature within tolerable limits. Expand
Regulation of body temperature by the bluefin tuna.
Abstract Bluefin tuna (Thunnus thynnus Linnaeus) can control the temperature of their bodies (25–30°C) so that the warmest portion of the muscle mass varies only 5°C over a 10°C–30°C range of waterExpand
Thermoregulation of the American Alligator, Alligator mississippiensis
  • E. Smith
  • Biology
  • Physiological Zoology
  • 1975
Despite the substantial literature concerning behavioral and physiological thermoregulation of reptiles, the crocodilians have received little attention and a relatively stable body temperature for large reptiles due mostly to thermal lag and heat storage is predicted. Expand
Physiological thermoregulation in turtles.
Peripheral vascular responses to heating and cooling appear to represent a means of changing functional insulation and may contribute to the thermoregulatory capacities of turtles under natural conditions. Expand
The Vascularity and Possible Thermoregulatory Function of the Horns in Goats
The extent to which the vascularity of the horn contributes to the regulation of body temperature in goats is evaluated and evidence is presented which indicates that the circulation of blood is regulated by the horn. Expand
It is concluded that the naked legs of these birds serve as controlled heat conduits of great importance in thermoregulation. Expand