Lesson plan
Microgale
Microgale is a genus of mammal in the family Tenrecidae. There are 21 living species on the island of Madagascar and one extinct species known from a fossil. Some species have been discovered in the last twenty years. On the basis of molecular data indicating that Talazac's shrew tenrec and Dobson's shrew tenrec form a sister group to the rest of Microgale, these two species were transferred from Microgale to Nesogale in 2016. Nesogale and Microgale are estimated to have diverged about 19 million years ago, during the Early Miocene. The web-footed tenrec, M. mergulus, the only semiaquatic member of the genus, was formerly placed in the monotypic genus Limnogale, but was moved in 2016 on the basis of sequence data showing it to be deeply nested within Microgale. Microgale contains the following extant species: *Short-tailed shrew tenrec (M. brevicaudata) G. Grandidier, 1899 *Cowan's shrew tenrec (M. cowani) Thomas, 1882 *Drouhard's shrew tenrec (M. drouhardi) G. Grandidier, 1934 *Dryad shrew tenrec (M. dryas) Jenkins, 1992 *Pale shrew tenrec (M. fotsifotsy) Jenkins, Raxworthy & Nussbaum, 1997 *Gracile shrew tenrec (M. gracilis) (Forsyth Major, 1896) *Grandidier's shrew tenrec (M. grandidieri) Olson et al., 2009 *Naked-nosed shrew tenrec (M. gymnorhyncha) Jenkins et al., 1996 *Jenkins's shrew tenrec (M. jenkinsae) Goodman & Soarimalala, 2004 *Northern shrew tenrec (M.…
Article summary
Microgale is a genus of mammal in the family Tenrecidae. There are 21 living species on the island of Madagascar and one extinct species known from a fossil. Some species have been discovered in the last twenty years. On the basis of molecular data indicating that Talazac's shrew tenrec and Dobson's shrew tenrec form a sister group to the rest of Microgale, these two species were transferred from Microgale to Nesogale in 2016. Nesogale and Microgale are estimated to have diverged about 19 million years ago, during the Early Miocene. The web-footed tenrec, M. mergulus, the only semiaquatic member of the genus, was formerly placed in the monotypic genus Limnogale, but was moved in 2016 on the basis of sequence data showing it to be deeply nested within Microgale. Microgale contains the following extant species: *Short-tailed shrew tenrec (M. brevicaudata) G. Grandidier, 1899 *Cowan's shrew tenrec (M. cowani) Thomas, 1882 *Drouhard's shrew tenrec (M. drouhardi) G. Grandidier, 1934 *Dryad shrew tenrec (M. dryas) Jenkins, 1992 *Pale shrew tenrec (M. fotsifotsy) Jenkins, Raxworthy & Nussbaum, 1997 *Gracile shrew tenrec (M. gracilis) (Forsyth Major, 1896) *Grandidier's shrew tenrec (M. grandidieri) Olson et al., 2009 *Naked-nosed shrew tenrec (M. gymnorhyncha) Jenkins et al., 1996 *Jenkins's shrew tenrec (M. jenkinsae) Goodman & Soarimalala, 2004 *Northern shrew tenrec (M.…
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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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