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| Kaveski, Sharon | 1 |
| Margulis, Lynn | 1 |
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Peer reviewedKaveski, Sharon; Margulis, Lynn – American Biology Teacher, 1983
Discusses the "sudden explosion" of animal fossils during the Cambrian era, suggesting that the "explosion" is a result of organic evolution, leading to remarkably preservable calcareous skeletons. Suggests that earlier organisms were soft-bodied and consequently were poorly preserved in the fossil record. (JN)
Descriptors: Biology, College Science, Evolution, High Schools
