Natural environment and thermal behaviour of Dimetrodon limbatus.

  title={Natural environment and thermal behaviour of Dimetrodon limbatus.},
  author={Florides and Kalogirou and Tassou and Wr{\'o}bel},
  journal={Journal of thermal biology},
  volume={26 1},

Long bone histology indicates sympatric species of Dimetrodon (Lower Permian, Sphenacodontidae)

Histological analysis of newly excavated material from the Briar Creek Bonebed has resolved some of the discretion between these two competing hypothesis, confirming the coexistence of a small (D. natalis) with at least one larger Dimetrodon species.

Evolution of bone microanatomy of the tetrapod tibia and its use in palaeobiological inference

Lifestyle is inferred to have been terrestrial for the stem‐tetrapod Discosauriscus, the basal synapsid Dimetrodon, the dicynodont therapsid Dicynodon, an unindentified gorgonopsian, and the parareptile Pareiasaurus, which is modelled as being aquatic, but was more likely amphibious.

First palaeohistological inference of resting metabolic rate in an extinct synapsid, Moghreberia nmachouensis (Therapsida: Anomodontia)

The first quantitative inferences of resting metabolic rates on fossil synapsids are performed using quantitative histology (size, shape and density of osteocyte lacunae) combined with phylogenetic eigenvector maps and optimization of these inferences allowed us to better constrain the temporal and phylogenetic frames of the acquisition of mammalian endothermy.

Selection towards larger body size in both herbivorous and carnivorous synapsids during the Carboniferous

A large number of studies have shown that the influence of diet on body size has received considerable attention and is likely to have an important impact on physical and ecological parameters.

Nocturnality in synapsids predates the origin of mammals by over 100 million years

Recognizing the complexity of diel activity patterns in non-mammalian synapsids is an important step towards a more nuanced picture of the evolutionary history of behaviour in the synapsid clade.

Were the synapsids primitively endotherms? A palaeohistological approach using phylogenetic eigenvector maps

Inference of resting metabolic rates and thermometabolic regimes of extinct synapsids shows that the nodes Anomodontia and Mammalia were primitively endotherms, and endothermy arose independently in Archosauromorpha, Sauropterygia and Therapsida.

Combined paleohistological and isotopic inferences of thermometabolism in extinct Neosuchia, using Goniopholis and Dyrosaurus (Pseudosuchia: Crocodylomorpha) as case studies

Abstract. The evolution of thermometabolism in pseudosuchians (Late Triassic to the present) remains a partly unsolved issue: extant taxa (crocodilians) are ectothermic, but the clade was inferred



Notes on the Permo-Carboniferous Reptile Dimetrodon

  • A. Romer
  • Chemistry
    The Journal of Geology
  • 1927
1. A nearly complete postcranial skeleton of the Permo-Carboniferous reptile Dimetrodon is described and figured. The structure and possible function of the spines are discussed, and a mechanical

A thermal model of the sailback pelycosaur

Standard techniques of energy exchange analysis are applied to modelling the thermal regimes of several species of sailback pelycosaurs. Of particular interest is the role played by the sail in

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.

The Dinosaur Heresies

This book supports the view that dinosaurs were warm-blooded, intelligent and agile creatures bearing little resemblance to existing reptiles.

The Biophysical Ecology of the Alligator: Heat Energy Budgets and Climate Spaces

Heat energy budgets were computed for the American alligator, Alligator mississippiensis, and used to generate steady—state climate space diagrams for large and small individuals, which revealed that all sizes of alligators can withstand a wide range of temperatures in a blackbody cavity.

Thermal Regulation in Sail Lizards

The sail of Dimetrodon grandis was the end form of an evolutionary series of pelycosaurs that had tended to develop increasingly large sails, with features strongly suggesting an early attempt at temperature regulation.