Lesson plan
Macadens
Macadens is an extinct genus of cartilaginous fish, likely belonging to the subclass Holocephali, discovered in Mammoth Cave National Park, Kentucky. It contains a single known species, Macadens olsoni, known from a fossilized tooth whorl dating to the Late Mississippian subperiod of the Carboniferous period, approximately 340 to 335 million years ago. The genus name an abbreviation for "Mammoth Cave denizen", while the species name is in honor of retired Mammoth Cave park scientist Rickard Olson.
Article summary
Macadens is an extinct genus of cartilaginous fish, likely belonging to the subclass Holocephali, discovered in Mammoth Cave National Park, Kentucky. It contains a single known species, Macadens olsoni, known from a fossilized tooth whorl dating to the Late Mississippian subperiod of the Carboniferous period, approximately 340 to 335 million years ago. The genus name an abbreviation for "Mammoth Cave denizen", while the species name is in honor of retired Mammoth Cave park scientist Rickard Olson.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- 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.