Lesson plan
Pentapycnon
Pentapycnon is a genus of sea spiders (class Pycnogonida) in the family Pycnogonidae. As the name of this genus suggests, Pentapycnon is among the four genera of sea spiders with five pairs of legs in adults rather than the usual four leg pairs. This genus includes three species: P. bouvieri, P. charcoti, and P. geayi. The species P. bouvieri and P. charcoti are found in the Southern Ocean, whereas the species P. geayi is found in the Caribbean Sea, the tropical Atlantic Ocean, and the Mediterranean Sea. The species P. geayi is one of only two species of polymerous (i.e., extra-legged) sea spiders found outside the Southern Ocean.
Article summary
Pentapycnon is a genus of sea spiders (class Pycnogonida) in the family Pycnogonidae. As the name of this genus suggests, Pentapycnon is among the four genera of sea spiders with five pairs of legs in adults rather than the usual four leg pairs. This genus includes three species: P. bouvieri, P. charcoti, and P. geayi. The species P. bouvieri and P. charcoti are found in the Southern Ocean, whereas the species P. geayi is found in the Caribbean Sea, the tropical Atlantic Ocean, and the Mediterranean Sea. The species P. geayi is one of only two species of polymerous (i.e., extra-legged) sea spiders found outside the Southern Ocean.
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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?
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