Lesson plan

Holasteridae

Holasteridae is an extinct family of sea urchins. These semi-infaunal detritivores lived during the Cretaceous period, from 140.2 to 53.0 Ma.

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Article summary

Holasteridae is an extinct family of sea urchins. These semi-infaunal detritivores lived during the Cretaceous period, from 140.2 to 53.0 Ma.

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

Bibliography

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Key claims and bibliography are generated from the same tracked claims and sources as the article page.