单词:Rochester shales
单词:Rochester shales 相关文章
14 A Rare Fossil Record The preservation of embryos and juveniles is a rate occurrence in the fossil record. The tiny, delicate skeletons are usually scattered by scavengers or destroyed by weathering before they can be fossilized. Ichthyosaurs had
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14 A Rare Fossil Record The preservation of embryos and juveniles is a rate occurrence in the fossil record. The tiny, delicate skeletons are usually scattered by scavengers or destroyed by weathering before they can be fossilized. Ichthyosaurs had a
EDUCATION REPORT - Teacher or Tutor? For Kids in Rochester, N.Y., the Answer May Be One in the Same By Nancy Steinbach Broadcast: Thursday, July 07, 2005 I'm Gwen Outen with the VOA Special English Ed