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de Barros Molina, F., Machado, F. A., & Zaher, H. (2012). Taxonomic validity of mesoclemmys heliostemma (mccord, joseph-ouni & lamar, 2001) (testudines, chelidae) inferred from morphological analysis. Zootaxa, 3575, 63–77. 
Added by: Admin (06 Jan 2014 18:22:37 UTC)
Resource type: Journal Article
BibTeX citation key: deBarrosMolina2012
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Categories: General
Keywords: Chelidae, Mesoclemmys gibba, Mesoclemmys heliostemma, Mesoclemmys raniceps, Schildkröten - turtles + tortoises, Systematik - taxonomy
Creators: de Barros Molina, Machado, Zaher
Collection: Zootaxa
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Abstract     
Mesoclemmys heliostemma (Testudines: Chelidae) was described based on five vouchered specimens and nine live specimens from the western Amazon basin. Some authors questioned its status as a valid species, suggesting that it represents a junior synonym of M. raniceps. Here, we report on eight additional specimens from eastern Peru and northern Brazil, and provide descriptive statistics of morphological characters for hatchlings, juveniles, and adults of M. heliostemma, M. raniceps, and M. gibba. We also test for group differences through univariate and multivariate statistical analyses, and discuss some advantages of this methodology. Our data suggest that all three taxa are morphologically divergent, and that M. heliostemma is a valid species.
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