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Dimetrodon

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Dimetrodon incisivum 01.jpg

Familia : †Sphenacodontidae 
Subfamilia : †Sphenacodontinae 
Genus : †Dimetrodon 
Cope, 1878
   
Palaeontologia
Cisuralianum, 295–272 m.a.
Subdivisiones: Species
Species typica
Clepsydrops limbatus Cope, 1877
Dimetrodon giganhomogenes refectus, apicibus spinarum neuralium expositis.

Dimetrodon (Graece, 'duas dentium mensuras' significans) est exstinctum synapsidorum non mammalianorum genus, cuius species in vita per aevum Permianum iniens erant, abhinc annorum a 295 ad 272 fere milliones.[1][2][3] Pars est familiae Sphenacodontidarum. Eius proprietas notissima est magnum spinarum neuralium velum in tergo positum, spinis praelongis ex vertebris extendentibus effectum. Dimetrodonta quattuor cruribus ambulabat, atque ei erat calvaria alta magnique variarum magnitudinum dentes secundum maxillas positi. Plurima eius fossilia in Civitatibus Foederatis meridianis occidentalibusque effossa sunt, maiore parte ex Stratis Rubris Texiae et Oclahomae, vetere deposito geologico; nuper autem, fossilia in Germania inventa sunt. Plus quam duodecim species rite describuntur ex anno 1878, cum genus primum erectum esset.

Phylogenia[recensere | fontem recensere]

Hic est cladogramma cladi Synapsidorum, ex explicatione Benson 2012.[4]

Variae Dimetrodontis species restitutae.
Amniota

Sauropsida (cum dinoasuris, reptiliibus, et avibus vivis) Protorothyris.jpg


Synapsida


Ophiacodontidae Archaeothyris BW.jpg



Varanopidae Varanops brevirostris.jpg





Caseasauria Ennatosaurus BW.jpg




Ianthodon schultzei




Edaphosauridae Ianthasaurus BW.jpg


Sphenacodontia

Haptodus garnettensis Haptodus BW.jpg




Pantelosaurus saxonicus



Sphenacodontidae

Cutleria wilmarthi Cutleria wilmarthi reconstruction.jpg




Secodontosaurus obtusidens Secodontosaurus BW.jpg




Cryptovenator hirschbergeri




Dimetrodon spp. Dimetrodon grandis.jpg



Sphenacodon spp. Sphenacodon222.jpg







Therapsida (including mammals)Biarmosuchus.jpg










Coniunctiones variarum Dimetrodontis specierum, ex Brink et al. 2015.[5]

Sphenacodontidae

Secodontosaurus





Sphenacodon



Ctenospondylus





Dimetrodon milleri




Dimetrodon limbatus




Dimetrodon borealis



Dimetrodon grandis







Notae[recensere | fontem recensere]

  1. "Dimetrodon". Paleobiology Database .
  2. Angielczyk, K. D. (2009). "Dimetrodon Is Not a Dinosaur: Using Tree Thinking to Understand the Ancient Relatives of Mammals and their Evolution". Evolution: Education and Outreach 2 (2): 257–71 .
  3. Huttenlocker, A. K.; Rega, E. (2012). "The Paleobiology and Bone Microstructure of Pelycosauriangrade Synapsids". In Chinsamy, A.. Forerunners of Mammals: Radiation, Histology, Biology. Indiana University Press. pp. 90–119. ISBN 978-0-253-35697-0 .
  4. Lapsus in citando: Invalid <ref> tag; no text was provided for refs named BRJ12
  5. Brink, Kirstin S.; Maddin, Hillary C.; Evans, David C.; Reisz, Robert R.; Sues, Hans-Dieter (2015). "Re-evaluation of the historic Canadian fossil Bathygnathus borealisfrom the Early Permian of Prince Edward Island". Canadian Journal of Earth Sciences 52 (12): 1109–1120 .

Bibliographia[recensere | fontem recensere]

  • Baur, G., et E. C. Case. 1899. "The history of the Pelycosauria, with a description of the genus Dimetrodon, Cope." Transactions of the American Philosophical Society 20 (1): 5–62. doi:10.2307/1005488. hdl:2027/uc1.32106020416696. JSTOR 1005488.
  • Nevo, Annapaola del. 2000. Dimetrodon. Novi Eboraci: Harry N. Abrams. ISBN 0810956624.
  • Olson, E. C., et J. R. Beerbower. 1953. "The San Angelo Formation, Permian of Texas, and Its Vertebrates." The Journal of Geology 61 (5): 389–423. Bibcode:1953JG.....61..389O. doi:10.1086/626109. S2CID 128681671.
  • Olson, E. C. 1955. "Parallelism in the evolution of the Permian reptilian faunas of the Old and New Worlds." Fieldiana 37 (13): 385–401.Editio interretialis.
  • Sandell, Elizabeth J. 1989. Dimetrodon: the sail-backed reptile. Ed. Marjorie L. Oelerich et Harlan S. Hansen; illust. Vista III Design. Neapoli Floridae: Bancroft-Sage Pub., c1989. ISBN 0944280153.
  • Sternberg, C. W. 1942. "The skeleton of an immature pelycosaur, Dimetrodon cf. grandis, from the Permian of Texas." Journal of Paleontology 16 (4): 485–86. JSTOR 1298848.

Nexus externi[recensere | fontem recensere]

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