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Species composition of echinoid assemblages. Mixed Assemblage: (a)... | Download Scientific Diagram
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Part C
Reorganization of sea urchin gene regulatory networks at least 268 million years ago as revealed by oldest fossil cidaroid echinoid | Scientific Reports
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Book: Fossil Echinoids of Texas
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Echinoids - British Geological Survey
A selection of examples of extant and fossil sea urchin tests with... | Download Scientific Diagram
The Echinoid Directory - Natural History Museum
Echinoids - British Geological Survey
Paleocene echinoid faunas of the eastern United States | Journal of Paleontology | Cambridge Core