التفاصيل البيبلوغرافية
| العنوان: |
Chambers of secrets. |
| المؤلفون: |
Ward, Peter |
| المصدر: |
New Scientist; 4/5/2008, Vol. 197 Issue 2650, p40-43, 4p |
| مصطلحات موضوعية: |
NAUTILUS, LIVING fossils, NAUTILIDAE, BIOLOGICAL evolution, BIOLOGY |
| مستخلص: |
The article discusses biologists' interest in studying chambered nautiluses. THey are considered living fossils, species that have defied the evolutionary odds to survive virtually unchanged for millions of years. Scientific interest in nautiluses focuses on the two main questions about their evolutionary history and the workings of their exquisite chambered shells. |
| قاعدة البيانات: |
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