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Mesoclemmys perplexa BOUR & ZAHER, 2005

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Higher TaxaChelidae, Chelinae, Testudines (turtles) 
Common NamesBrasilianische Krötenkopfschildkröte 
SynonymMesoclemmys perplexa BOUR & ZAHER 2005
Mesoclemmys perplexa — VAN DIJK et al. 2011
Phrynops (Mesoclemmys) hogei — PHILIPPEN 2012 
DistributionBrazil (Piauí, Ceará)

Type locality: Forested and humid areas of the regions called “Olho d’Água da Santa”and “Baixão do Fausto”, southern part of the Parque Nacional da Serra das Confusões, State of Piauí, Brasil. Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
TypesHolotype: MZUSP 4111 (Museu de Zoologia da Universidade de São Paulo), 
CommentFor a color illustration and distribution map see BOUR & ZAHER 2005.

Diagnosis. - abbreviations are listed in Appendix 2): A chelid turtle with a shell low: Carapace depth/length = ca. 0.25 (juvenile) – 0.28 (adult) and narrow: Carapace width/length = ca. 0.7 (juvenile) – 0.6 (adult), laterally constricted in adult. Dorsal scutes noticeably sculpted by both concentric and radiating ridges. Head moderately enlarged (Carapace width/head width: ca. 3) but with a narrow parietal crest. Temporal and frontal scutes not bulging, with the frontals making a more or less obvious cruciform figure; snout short and pointed, not upturned. Maximum known length: 193.7 mm (female). 
EtymologyNamed after the Latin word “perplexa” which means confused, intricate, obscure, or ambiguous, and refers to the place where the taxon was observed, Serra das Confusões; it also alludes to its ambiguous generic attribution, and that of its allies. 
  • Bour, R. & Zaher, H. 2005. A NEW SPECIES OF MESOCLEMMYS, FROM THE OPEN FORMATIONS OF NORTHEASTERN BRAZIL (CHELONII, CHELIDAE). Pap. Avul. Zool. 45 (24): 295-311 - get paper here
  • Campos, Felipe Siqueira; Ricardo Lourenço de Moraes and Caio Stuart Amorim Pereira. 2011. New state record of Mesoclemmys perplexa Bour and Zaher, 2005 (Reptilia: Chelidae) in Brazil. Herpetology Notes 4: 263-264. - get paper here
  • Loebmann, D. 2008. Geographic distribution. Mesoclemmys perplexa. Brazil: Ceará. Herpetological Review 39 (2): 236 - get paper here
  • TTWG; Dijk, Peter Paul van; John B. Iverson, H. Bradley Shaffer; Roger Bour & Anders G.J. Rhodin [turtle taxonomy working group] 2011. Turtles of the World, 2011 Update: Annotated Checklist of Taxonomy, Synonymy, Distribution, and Conservation Status. Chelonian Research Monographs No. 5: 78 pp.; doi:10.3854/crm.5.000.checklist.v4.2011
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