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Terrapene coahuila SCHMIDT & OWENS, 1944

IUCN Red List - Terrapene coahuila - Endangered, EN

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Higher TaxaEmydidae, Emydinae, Testudinoidea, Testudines (turtles)
Common NamesE: Coahuilan box turtle
G: Coahuila-Dosenschildkröte, Wasser-Dosenschildkröte
S: Caja de Cuatrocienegas 
SynonymTerrapene coahuila SCHMIDT & OWENS 1944: 101
Terrapene coahuila — KING & BURKE 1989
Terrapene coahuila — LINER 1994
Terrapene coahuila — LINER 2007
Terrapene coahuila — FRITZ & HAVAS 2007
Terrapene coahuila — TTWG 2021 
DistributionMexico (Cuatro Cienegas basin of Coahuila)

Type locality: "Cuatro Cienegas, Coahuila," Mexico.  
Reproductionoviparous. Exhibits temperature‐dependent sex determination (TSD) fide Cornejo-Páramo et al. 2020 (and references therein). 
TypesHolotype: FMNH 41234 (incorrectly cited as FMNH 55656 by Milstead 1969:81). 
DiagnosisDiagnosis. A Terrapene with the characteristic plastral hinge, not evidently more closely related to any one of the known species than to others. Distinguished by its low elongate carapace, un spotted shell and soft parts, toes 5-4, and beak hooked and notched, dorsal keel vestigial (Schmidt & Owens 1944). 
CommentPhylogenetics: T. coahuila, carolina, and triunguis are closely related phylogenetically, although they are often treated as separate species. Genetically, they may be more appropriately treated as subspecies (see Thomson et al. 2021). 
EtymologyNamed after the type locality. 
  • Álvarez, F.; M. Ojeda (eds.) 2019. Animal Diversity and Biogeography of the Cuatro Ciénegas Basin, Cuatro Ciénegas Basin: An Endangered Hyperdiverse Oasis. Springer, 231 pp. - get paper here
  • Baur, M. & Jasser-Häger, I. 2003. Selten und bedroht - doch kaum beachtet: die Mexikanische Wasser-Dosenschildkröte, Terrapene coahuila (SCHMIDT & OWENS 1944). Reptilia (Münster) 8 (42): 25-30 - get paper here
  • Baur, M. & Jasser-Häger, I. 2004. Terrapene coahuila. Reptilia (GB) (32): 19-24 - get paper here
  • Brown, William S. 1971. Morphometrics of Terrapene coahuila (Chelonia, Emydidae), with comments on its evolutionary status. Southwestern Naturalist 16 (2): 171-184 - get paper here
  • Castañeda-Gaytan, Gamaliel; Ernesto Becerra-López; Sara Valenzuela-Ceballos; Miguel Borja-Jiménez; Bruno Rodríguez-López; Juan Castañeda; Jaime Sánchez-Salas; Craig B. Stanford 2020. Conservation Status and Sex Ratios of the Coahuila Box Turtle (Terrapene coahuila) in the Cuatro Ciénegas Valley of Coahuila, Mexico, 2011–2018 Chelonian Conservation and Biology 19 (1): - get paper here
  • Cornejo-Páramo, P., Lira-Noriega, A., Ramírez-Suástegui, C. et al. 2020. Sex determination systems in reptiles are related to ambient temperature but not to the level of climatic fluctuation. BMC Evol Biol 20: 103 - get paper here
  • Dodd, C. Kenneth, Jr. 2001. North American Box Turtles: A Natural History. University of Oklahoma Press, Norman. [review in Reptilia 40: 86]
  • Ernst, C H; McBreen J F 1991. Terrapene Merrem. Box turtles. Catalogue of American Amphibians and Reptiles ( 511: 1-6 - get paper here
  • Ernst,C.H. and Barbour,R.W. 1989. Turtles of the World. Smithsonian Institution Press, Washington D.C. - London
  • García-Vázquez, Uri Omar; Marysol Trujano-Ortega, Arturo Contreras- Arquieta, Omar Ávalos-Hernández, Omar Osvaldo Escobedo-Correa, and Pablo Corcuera 2019. Chapter 13 Diversity of Amphibians and Reptiles in the Cuatro Ciénegas Basin. In: Álvarez, F.; M. Ojeda (eds.), Animal Diversity and Biogeography of the Cuatro Ciénegas Basin, Cuatro Ciénegas Basin. Springer, pp. 175-188 - get paper here
  • Howeth, J.G.; McGaugh, S.E. & Hendrickson, D.A. 2008. Contrasting demographic and genetic estimates of dispersal in the endangered Coahuilan box turtle: a contemporary approach to conservation. Molecular Ecology 17: 4209–4221 - get paper here
  • Iverson, J.B. 1982. Terrapene coahuila Schmidt and Owens. Catalogue of American Amphibians and Reptiles 288:1-2. - get paper here
  • Lazcano D, Nevárez-de los Reyes M, García-Padilla E, Johnson JD, Mata-Silva V, DeSantis DL, Wilson LD. 2019. The herpetofauna of Coahuila, Mexico: composition, distribution, and conservation status. Amphibian & Reptile Conservation 13(2) [General Section]: 31–94 (e189) - get paper here
  • Legler, J.M.& Vogt, R.C. 2013. The Turtles of Mexico: Land and Freshwater Forms. University of California Press, 416 pp. - get paper here
  • Lemos-Espinal JA, Smith GR 2016. Amphibians and reptiles of the state of Coahuila, Mexico, with comparison with adjoining states. ZooKeys 593: 117-137, doi: 10.3897/zookeys.593.8484 - get paper here
  • Liner, Ernest A. 2007. A CHECKLIST OF THE AMPHIBIANS AND REPTILES OF MEXICO. Louisiana State University Occasional Papers of the Museum of Natural Science 80: 1-60 - get paper here
  • Martin, Bradley T.; Neil P. Bernstein, Roger D. Birkhead, Jim F. Koukl, Steven M. Mussmann, John S. Placyk Jr. 2013. Sequence-based molecular phylogenetics and phylogeography of the American box turtles (Terrapene spp.) with support from DNA barcoding. Molecular Phylogenetics and Evolution 68 (1): 119–134 - get paper here
  • McCord, W.P. & Joseph-Ouni, M. 2003. Chelonian Illustrations #11: American box turtles. Reptilia (GB) (31): 59-63 - get paper here
  • McLaughlin, Connor J. and C. Tristan Stayton 2016. Convergent Evolution Provides Evidence of Similar Radiations in Shell Shape in the Turtle Families Emydidae and Geoemydidae. Herpetologica 72 (2): 120-129. - get paper here
  • Milstead, W.W. 1969. Studies on the evolution of box turtles (genus Terrapene). Bulletin of the Florida State Museum, Biological Sciences 14 (1): 1-113. - get paper here
  • PFAU, B. 2019. DGHT hilft IUCN: Aufbau einer Zuchtstation für die Coahuila-Dosenschildkröte in Mexiko elaphe N. F., (6): 77-81
  • Schmidt, K.P., and D. Owens. 1944. Amphibians and reptiles of northern Coahuila, Mexico. Field Museum of Natural History, Zoological Series. Chicago. 29: 97-115. - get paper here
  • Seidel, Michael E. & Carl H. Ernst 2017. A Systematic Review of the Turtle Family Emydidae. Vertebrate Zoology 67 (1): 1–122 - get paper here
  • TTWG; Rhodin, A.G.J., Iverson, J.B., Bour, R., Fritz, U., Georges, A., Shaffer, H.B., and van Dijk, P.P. 2021. Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status (9th Ed.). In: Rhodin, A.G.J., Iverson, J.B., van Dijk, P.P., Stanford, C.B., Goode, E.V., Buhlmann, K.A., and Mittermeier, R.A. (Eds.). Chelonian Research Monographs 8:1–472. doi:10.3854/crm.8.checklist.atlas.v9.2021. - get paper here
  • Webb, Robert G.;Minckley, Wendell L.;Craddock, James E. 1963. Remarks on the Coahuilan box turtle, Terrapene coahuila (Testudines, Emydidae). Southwestern Naturalist 8 (2): 89-99 - get paper here
  • Williams, K.L. 1960. Captive Boxturtles, Terrapene coahuila Herpetologica 16 (2): 102. - get paper here
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