Conodonts and associated graptolites from the late Early Devonian of east-central Alaska and western Yukon Territory
Conodonts and associated graptolites from the late Early Devonian of east-central Alaska and western Yukon Territory
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DOI：
10.1139/e85-200
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发表时间：
1985-12
影响因子：
1.4
通讯作者：
N. Savage;R. Blodgett;H. Jaeger
中科院分区：
文献类型：
--
作者：
N. Savage;R. Blodgett;H. Jaeger
从育空地区西部两个紧密分布的地点采集的样品显示，阿拉斯加和育空地区北部和东部地区早泥盆世晚期的牙形刺是该地区的特征，西伯利亚中部和北方也是该地区的特征。阿拉斯加中东部附近地区的牙形刺表明了一个令人感兴趣的相关笔石的年龄：它们是北美已知的最年轻的笔石之一。
Samples from two closely placed localities in western Yukon Territory have yielded late Early Devonian conodonts characteristic of areas farther to the north and east in Alaska and Yukon Territory and also characteristic of central and northern Siberia. Conodonts from a nearby locality in east-central Alaska indicate an age that makes the associated graptolites of considerable interest: they are among the youngest graptolites known in North America.