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Black Hills Institute of Geological Research, Inc.: Ammonoids

Curated by ACT

Ammonoids, more commonly referred to as Ammonites, are the extinct ancestors of today's octopus, squid and nautilus. This page provides excellent information about these creatures, as well as diagrams and pictures.

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Additional Tags
cephalopod, extinct mollusc, extinct mollusk, invertebrate fossil, mollusc fossil, mollusk fossil, ammonites, ammonoidea, ammonoids, invertebrate animal fossils
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Classroom Considerations
  • Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)
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