The Extinct Mammalian Fauna of Dakota and Nebraska
The Extinct Mammalian Fauna of Dakota and Nebraska
复制标题
达科他州和内布拉斯加州的灭绝哺乳动物群
DOI：
10.1086/270580
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发表时间：
1870
期刊：
影响因子：
--
通讯作者：
F. Hayden
中科院分区：
文献类型：
--
作者：
J. Leidy;F. Hayden
由于有许多不同的群体，他不得不把它们单独排列。“Sycometra compressa似乎是一种海绵，在同一个身体上，甚至有八个不同属的成熟形式。最后，希克尔教授恳求所有可能拥有钙质海绵标本的读者将它们寄给他进行检查和比较。
cate affinities, with so many cliferent groups, that lhe has been obliged to place them in a separate order by themselves. "Sycometra compressa appears as a sponge stock which bears cpon one and the same corpus the mature forms even of eight different genera." In conclusion Professor HIeckel begs all of his readers who may be in possession of specimens of calcareous sponges to send them to him for examination and comparison.