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Cynodonts
| Scientific Classification |
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Cynodonts were a group of animals that lived during the late Permian period,
though to the mid Cretaceous period,
perhaps from about 250 million to 100 million years ago.
Cynodonts had many mammal-like features. They had differentiated teeth, mammal-like skulls,
a large braincase,
a secondary palate, and were probably warm-blooded and covered in hair. It is thought however that
they did laid eggs, just like other Mesozoic Era proto-mammals. Today, it is widely believed
that all modern mammals are descended from a Cynodonts.
The name "Cynodont" was coined by
Sir Richard Owen in 1861,
and means "dog teeth".
Cynodonts were mammal-like reptiles that lived between 250 and 100 million years ago, and were probably the ancestors of all modern mammals
Related Information & Resources
See Also
Cynodont Books
Here are some books from Amazon.com:
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By J. Botha & A. Chinsamy
Elsevier
Digital
![The palaeoecology of the non-mammalian cynodonts Diademodon and Cynognathus from the Karoo Basin of South Africa, using stable light isotope analysis [An ... Palaeoclimatology, Palaeoecology]](http://ecx.images-amazon.com/images/I/516708A3WQL._SL160_.jpg) | List Price: $5.95*
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Click Here | Product Description:
This digital document is a journal article from Palaeogeography, Palaeoclimatology, Palaeoecology, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
The palaeoecology of the coeval Middle Triassic non-mammalian cynodonts, Diademodon and Cynognathus (Therapsida) remains poorly understood although their gross morphology has been studied intensively. Significant differences in their growth patterns suggest inherent biological differences, despite having inhabited similar environments. In this study, the palaeoecology of Cynognathus and Diademodon specimens were examined using intra-tooth stable carbon and oxygen isotope analyses of enamel carbonate. The resulting stable isotope patterns of Cynognathus and Diademodon were compared with that of Crocodylus niloticus and published mammalian tooth enamel data. Predictably, the non-mammalian cynodont @d^1^3C values fall within the expected range for C"3 plant diets. Both @d^1^8O and @d^1^3C values of Diademodon are markedly more depleted than those of Cynognathus, suggesting that the former fed in shadier, damper areas, was nocturnal and/or depended more directly on environmental water. The seasonal amplitude reflected in the Cynognathus teeth is relatively low. However, high amplitude, directional @d^1^8O intra-tooth variations in the Diademodon teeth are comparable to, or higher than, those observed for extant mammalian and C. niloticus teeth from semi-arid, seasonal regions. This suggests that marked seasonality prevailed in the Karoo Basin during the Middle Triassic, and that Diademodon was sensitive to these variations. These isotopic differences between Diademodon and Cynognathus indicate differing responses to climatic fluctuations and reveal new insights into the palaeoecology of non-mammalian cynodonts. |
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By Alfred Walter Crompton
British Museum (Natural History)
Paperback
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By E. & J. Kitching Colbert
American Museum Nat. History
Paperback
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By L. P. Tatarinov
Peabody Museum, Yale University
Paperback
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Royal Society
Paperback
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By T. Kemp
Philosophical Transactions of the Royal Society of London
Paperback
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By T. S Kemp
Royal Society]
Paperback (54 pages)
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Peabody Museum of Natural History, Yale University
Paperback
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By Farish A. Jr.. Jenkins
Peabody Museum of Natural History
Paperback
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By Edwin Harris Colbert
American Museum of Natural History
Unknown Binding (30 pages)
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