THE LIFE HISTORY OF VARANUS NILOTICUS.
THE LIFE HISTORY OF VARANUS NILOTICUS.
复制标题
尼罗河巨蜥的生活史。
DOI：
10.1126/science.67.1734.317
复制
发表时间：
1928
期刊：
影响因子：
56.9
通讯作者：
R. B. Cowles
中科院分区：
文献类型：
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作者：
R. B. Cowles
ingform，as Thyasira sancti-andrece（Bulletin of American Paleontology，No. 42，p. 166，pl. 30，fig.第2、3页，1925年）。所有特立尼达岛标本的铰链都被隐藏起来了，根据我们最伟大的贝壳学家WH·达尔博士的建议，它们只是暂时被称为Thyasira属，因为它们的属位令人困惑，后来我研究了一系列来自南美洲北方的贝壳和模具，从小个体到与特立尼达岛类型相当的个体，在形式上完全相似。几个较小的模具在相反的痕迹显示强大的主铰链齿。这些肯定不是Thyasira，实际上没有牙齿; Dall博士宣布他们不像他所知道的任何东西。显然，它们代表了一个新的属，但该系列中较大的成员没有显示出它们的铰链特征，尽管它们具有相同的形式，但人们不能肯定它们像较小的标本一样具有铰链齿。最近，然而，我手里有一个全尺寸的贝壳，相当于特立尼达类型，一个令人高兴的意外，它非常薄而精致的物质在喙处被磨损，大约三个强壮的痕迹，相当长，在内部填充物的反面清楚地显示出主齿。我希望以后能弄清楚铰链的结构。
ing form, as Thyasira sancti-andrece (Bulletin of American Paleontology, No. 42, p. 166, pl. 30, figs. 2, 3, 1925). The hinge of all the Trinidad specimens was concealed, and they were only provisionally re-ferred to the genus lThyasira, on the advice of Dr. WH Dall, our greatest conchologist, to whom they were submitted because of their puzzling generic position.Subsequently I studied a series of shells and molds from northern South America, whichgraded insize from small individuals to those equalling the Trinidad type and exactly like it in form. Several of the smaller molds showed in reverse traces of strong cardinal hinge teeth. These were certainly not Thyasira, whichis practically edentulous; and Dr. Dall pronounced them unlike anything he knew. Clearly they represented a new genus, but thelarger members of the series did not show their hinge char-acters, and although they had the same form, one could not be certain that they possessed hinge teeth like the smaller specimens. Lately, however, I had in hand a full-sized shell, equaling the Trinidad type, and by a happy accident, its very thin and delicate substance was abraded at the beak and marks of about threestrong, rather long, cardinal teeth were clearly shown in reverse upon the internal filling. I hope later to figure the hinge structure.