. Die australische Zoologe. Zoologie; Zoologie; Zoologie. 11 (1 SCHNEIDEZÄHNE OP den MACROPODINAE. gefunden, daß m. Transversus mandibulären ist ganz verschieden von den Mylohyoid, davon wird von einem gut markierten fascia getrennt. Auf Anregung von Dr. Lightoller, Professor Stump, Abteilung der Ana-. Mg. 2. Macropus mficollis. Zerlegung von G. S. Lightoller, zeigt die platysma, M. orbicularis Oris und m. Mentalis; in B. und D. Die Nadel am hinteren Ende der Symphyse eingefügt wird. G. S. Lightoller del. Tomy, Universität Sydney, unterteilt, um den Unterkiefer symphyse von Macropus mficollis I

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. The Australian zoologist. Zoology; Zoology; Zoology. 11(1 THE INCISOR TEETH OP THE MACROPODINAE. found that m. transversus mandibular is quite distinct from the mylohyoid, being separated therefrom by a well marked fascia. At the suggestion of Dr. Lightoller, Professor Stump, Department of Ana-. Mg. 2. Macropus mficollis. Dissection by G. S. Lightoller, showing the platysma, m. orbicularis oris and m. mentalis; in B. and D. the needle is inserted at the posterior end of the symphysis. G. S. Lightoller del. tomy, University of Sydney, sectioned the mandibular symphysis of Macropus mficollis in order to examine the nature of the symphysis! joint. It was found to be very similar to the pubic symphysis in the human subject, the bone being separated by fibrous tissue, with a small median cavity in the cranial half, which possibly indicates the presence of a synovial cavity. Mastication in the kangaroo takes place in the same manner as in ruminants, the lower jaw having a lateral movement, though this is not so pronounced as in the ruminants. It is also interesting to note that, as observed by Owen (1839- 47, p. 301) in the kangaroos, the food can be regurgitated. Occasionally it can be seen that, after a few convulsive movements and gurgles, some food passes up into the mouth and is chewed over a few times and again swallowed. It is not, however, a prolonged and deliberate action which could be described as "chewing the cud." It is instructive to compare the teeth of macropodines of different ages and to study the • evidence of progressive wear exhibited by the incisors. In young. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Royal Zoological Society of New South Wales; Royal Zoological Society of New South Wales. Proceedings. [Sydney, Royal Zoological Society of New South Wales]

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• bookcentury1900
• bookdecade1910
• booksubjectzoology
• bookyear1914