Cynodonts

Cynodonts Timeline:

Cynodonts were mammal-like reptiles that lived between 250 and 100 million years ago, and were probably the ancestors of all modern mammals

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• Prehistoric Animals - Prehistoric and Extinct Animals

Cynodont Books

Cynodonts: Eucynodontia, Oligokyphus, Cynodont, Tritylodon, Trirachodon, Tritylodontidae, Cynognathus, Probelesodon, Thrinaxodon, Lumkuia Books LLC Paperback (138 pages) List Price: $19.99* Lowest New Price: $19.99* Lowest Used Price: $21.48* Usually ships in 24 hours* *(As of 13:39 Pacific 2 Sep 2010 More Info) Click Here Product Description: Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Eucynodontia, Oligokyphus, Cynodont, Tritylodon, Trirachodon, Tritylodontidae, Cynognathus, Probelesodon, Thrinaxodon, Lumkuia, Pachygenelus, Exaeretodon, Chiniquodontoidea, Chiniquodon, Hahnia, Charassognathus, Lepagia, Traversodontidae, Trithelodontidae, Galesauridae, Probainognathia, Dvinia, Procynosuchus, Protuberum, Brasilodon, Cynognathia, Brasilitherium, Massetognathus, Luangwa, Probainognathus, Procynosuchidae, Ecteninion, Riograndia, Parathrinaxodon, Probainognathidae, Chiniquodontidae, Galesaurus, Diarthrognathus, Diademodon, Traversodon, Prozostrodon, Progalesaurus, Trithelodon, Platycraniellus, Bolotridon, Cromptodon, Cynosaurus, Belesodon. Excerpt: Belesodon is an extinct genus of Eucynodontia from the Triassic . Sources A hyperlinked version of this chapter is at Bolotridon Bolotridon is an extinct genus of non-mammalian synapsid . See also (online edition) References (URLs online) A hyperlinked version of this chapter is at Brasilitherium Fossil range: Upper/Late Triassic Brasilitherium ("Brazilian beast") was a genus of cynodont that lived during the Late Triassic . Its length was approximately 12 cm and it weighed 20 grams. It fed on insects , making it an insectivore . Brasilodon was found in Paleorrota (Caturrita Formation ), a geopark located in Brazil . Brasilodontidae The brasilodontids include non-mammalian cynodonts that are currently considered to be the sister group of mammals. They were small, the size of a mouse . The brasilodontids' remains were found in the municipalities of Candelária and Faxinal do Soturno . The type species, Riograndia guaibensis , is known only from Paleorrota . See also (online edition) References (URLs online) Websites (URLs online) A hyperlinked version of this chapter is at Brasilodon Fossil range: Upper/Late Triassic Brasi...

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] By J. Botha & A. Chinsamy Elsevier Digital List Price: $5.95* Lowest New Price: $5.95* Available for download now* *(As of 13:39 Pacific 2 Sep 2010 More Info) 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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