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Cyclanorbis senegalensis (DUMÉRIL & BIBRON, 1835)

IUCN Red List - Cyclanorbis senegalensis - Vulnerable, VU
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Higher TaxaTrionychidae (Cyclanorbinae), Trionychoidea, Testudines (turtles)
Subspecies 
Common NamesE: Senegal Soft-shelled Turtle 
SynonymCryptopus senegalensis DUMÉRIL & BIBRON 1835: 504
Cyclanorbis petersii GRAY 1855: 69
Cyclanosteus petersii — GRAY 1860: 441
Tetrathyra baikii GRAY 1865
Cyclanosteus senegalensis var. normalis GRAY 1865
Cyclanosteus senegalensis var. equilifera GRAY 1865
Cyclanosteus senegalensis var. callosa GRAY 1865
Tetrathyra vaillantii ROCHEBRUNE 1884
Cyclanorbis senegalensis — BOULENGER 1889
Cyclanorbis senegalensis — SIEBENROCK 1902: 290
Cyclanorbis senegalensis — SIEBENROCK 1905
Cyclanorbis senegalensis — ERNST & BARBOUR 1989: 114
Cyclanorbis senegalensis — MCCORD & JOSEPH-OUNI 2003
Cyclanorbis senegalensis — TTWG 2014
Cyclanorbis senegalensis — TTWG 2021
Cyclanorbis senegalensis — TTWG 2025 
DistributionSudan (Jumhūriyyat), Republic of South Sudan (RSS), W Ethiopia, Chad, Cameroon, Central African Republic, Nigeria, Togo, Benin, Ghana, Ivory Coast, Liberia, Sierra Leone, Mauritania, Guinea, Guinea-Bissau, Senegal, Mali, Gambia (MacCarthy Island, HÅKANSSON 1981)

Type locality: Senegal  
Reproductionoviparous. 
TypesHolotype: MNHN-RA 4151 
DiagnosisUnfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 1952 characters), are available for collaborators and contributors. Please contact us for details. 
CommentSee also note in C. elegans.

Distribution: Not in Gabon fide PAUWELS & VANDE WEGHE 2008. See map in Mazuch et al. 2016: 2 (Fig. 1). Not in Equatorial Guinea (where it is replaced by C. elegans) fide SÁNCHEZ-VIALAS et al. 2022.

Type species: Cyclanorbis petersii GRAY 1855 is the type species of the genus Cyclanorbis GRAY 1852.

Habitat: freshwater (rivers and tributaries, lakes) 
EtymologyNamed after the type locality.

The genus was named after Greek kuklas = encircling and Latin orbis = anything of a circular shape, a disk. 
References
  • Akani, Godfrey C.; Edem A. Eniang, Nioking Amadi, Daniele Dendi, Emmanual M. Hema, Tomas Diagne, Gabriel Hoinsoudé Ségniabeto, Massimiliano Di Vittorio, Sulemana Bawa Gbewaa, Olivier S. G. Pauwels, Laurent Chitio, and <br />Luca Luiselli 2018. Macrohabitat and Microhabitat Usage by Two Softshell Turtles (Trionyx triunguis and Cyclanorbis senegalensis) in West and Central Africa. Herp. Cons. Biol. 13 (3): 642–651 - get paper here
  • Barnett, Linda K. & Emms, Craig 2005. Common reptiles of The Gambia. Rare Repro, Hailsham, East Sussex, 24 pp.
  • Bonin, F., Devaux, B. & Dupré, A. 2006. Turtles of the World. English translation by P.C.H. Pritchard. Johns Hopkins University Press, 416 pp.
  • Bour, R. 2008. Global diversity of turtles (Chelonii; Reptilia) in freshwater. Hydrobiologia 595:593–598 - get paper here
  • Chirio, L. 2009. Inventaire des reptiles de la région de la Réserve de Biosphère Transfrontalière du W (Niger/Bénin/Burkina Faso: Afrique de l’Ouest). [Herpetological survey of the W Transfrontier Biosphere Reserve area (Niger/Benin/Burkina Faso: West Africa]. Bull. Soc. Herp. France (132): 13-41 - get paper here
  • Chirio, L. & Lebreton, M. 2007. Atlas des reptiles du Cameroun. MNHN, IRD, Paris 688 pp.
  • Chirio, Laurent and Ivan Ineich 2006. Biogeography of the reptiles of the Central African Republic. African Journal of Herpetology 55(1):23-59. - get paper here
  • Duméril, A.M.C., and G. Bibron. 1835. Erpétologie Générale ou Histoire Naturelle Complète des Reptiles, Vol. 2. Librairie Encyclopédique de Roret, Paris, iv + 680 p. - get paper here
  • Ernst,C.H. and Barbour,R.W. 1989. Turtles of the World. Smithsonian Institution Press, Washington D.C. - London
  • Gray, J.E. 1852. Description of a new genus and some new species of tortoises. Proc. Zool. Soc. London 1852: 133-135 - get paper here
  • Gray, J.E. 1860. On the African Trionyces with hidden feet (Emyda). Ann. Mag. Nat. Hist. (3) 6: 440-441 - get paper here
  • Gray,J. E. 1865. Notice of a new genus and species of the family Trionychidae from Western Africa. Proc. Zool. Soc. London 1865: 323-324 - get paper here
  • Gray,J. E. 1865. On the development of the sternal callosities in Cyclanosteus senegalensis, and on the synonyms of Cyclanosteus and its allied genera. Proc. Zool. Soc. London 1865: 422-428 - get paper here
  • Gray,J.E. 1855. Description of a new genus and some new species of tortoises. Ann. Mag. Nat. Hist. (2) 15: 67-69 - get paper here
  • Hoinsoude-Segniagbeto, Gabriel; Roger Bour, Annemarie Ohler, Alain Dubois, Mark-Oliver Rödel, Jean François Trape, Jacques Fretey, Fabio Petrozzi, and Luca Luiselli 2014. Turtles and Tortoises of Togo: Historical Data, Distribution, Ecology, and Conservation. Chelonian Conservation and Biology Dec 2014, Vol. 13, No. 2: 152-165. - get paper here
  • Hughes, B. 1979. Occurrence of the freshwater trionychid turtles Cyclanorbis elegans and C. senegalensis in Ghana. Bull. IFAN 41 (sér. 1, 1): 193-205
  • Hughes, B. 1986. Longevity Records of African Captive Amphibians and Reptiles: Part 1: Introduction and Species List 1 - Amphibians and Chelonians. J. Herp. Assoc. Africa (32): 1-5 - get paper here
  • McCord, W.P. & Joseph-Ouni, M. 2003. Chelonian Illustrations #6. Flapshell and Giant Asian Softshell Turtles. Reptilia (GB) (26): 59-64 - get paper here
  • McGovern, P., & Luiselli, L. 2023. Knowledge gaps and conservation priorities for west African chelonians,. Amphibia-Reptilia 44 (2): 121-137 - get paper here
  • Padial, J. M. 2006. COMMENTED DISTRIBUTIONAL LIST OF THE REPTILES OF MAURITANIA (WEST AFRICA). Graellsia, 62(2): 159-178 - get paper here
  • Praschag, Reiner 2024. Halt die Klappen-Weichschildkröten: die Gattungen Cyclanorbis, Cycloderma und Lissemys Teil 1: Allgemeine Charakteristika. Elaphe 2024 (4): 12-17
  • Segniagbeto, G. H., Dekawole, J. K., Ayoro, J. H., Ketoh, G. K., Sinsin, B., Dendi, D., & Luiselli, L. 2024. SPECIES RICHNESS AND VARIATION IN THE COMMUNITY COMPOSITION OF AMPHIBIANS AND REPTILES IN FOUR SITES OF THE DAHOMEY GAP IN BENIN, WEST AFRICA. European Journal of Ecology, 10, 49-62 - get paper here
  • Segniagbeto, G.H.; Dekawole, J.K.; Ketoh, G.K.; Dendi, D.; Luiselli, L. 2022. Herpetofaunal Diversity in a Dahomey Gap Savannah of Togo (West Africa): Effects of Seasons on the Populations of Amphibians and Reptiles. Diversity 14: 964 - get paper here
  • Siebenrock, F. 1902. Zur Systematik der Schildkrotenfamilie Trionychidae Bell nebst der Beschreibung einer neuen CycIanorbis-Art. Anzeiger der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaftliche Classe, Wien 39: 289-291 - get paper here
  • Siebenrock, F. 1902. Zur Systematik der Schildkrötenfamilie Trionychidae Bell, nebst der Beschreibung einer neuen Cyclanorbis - Art. Sitzungsber. K. Akad. Wiss. Wien. Math-Naturwiss. Cl. 111: 807-846 - get paper here
  • Siebenrock, F. 1905. Chelonologische Notizen. Zool. Anz. 29: 460-468 - get paper here
  • Siebenrock, F. 1913. Schildkröten aus Syrien und Mesopotamien. Ann. Naturhist. Mus. Wien 27: 171-225 - get paper here
  • Siebenrock, Friedrich. 1897. Das Kopfskelet der Schildkröten. Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Klasse. 106 (4): 245-328 - get paper here
  • Spawls, Stephen; Tomáš Mazuch & Abubakr Mohammad 2023. Handbook of Amphibians and Reptiles of North-east Africa. Bloomsbury, 640 pp. - get paper here
  • Trape, J.F.; Trape, S. & Chirio, L. 2012. Lézards, crocodiles et tortues d'Afrique occidentale et du Sahara. IRD Orstom, 503 pp. - get paper here
  • TTWG [Peter Paul van Dijk, John B. Iverson, Anders G.J. Rhodin, H. Bradley Shaffer, and Roger Bour] 2014. Turtles of the World, 7th Edition: Annotated Checklist of Taxonomy, Synonymy, Distribution with Maps, and Conservation Status. 000.v7. Chelonian Research Monographs (ISSN 1088-7105) No. 5, doi:10.3854/crm.5.000.checklist.v7.2014 - get paper here
  • TTWG [TURTLE TAXONOMY WORKING GROUP: RHODIN, A.G.J., IVERSON, J.B., FRITZ, U., GALLEGO-GARCÍA, N., GEORGES, A., SHAFFER, H.B., AND VAN DuK, P.P.]. 2025. Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status (10th 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.). Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN SSC Tortoise and Freshwater Turtle Specialist Group. Chelonian Research Monographs 10:1-575 - 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.). Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/SSC Tortoise and Freshwater Turtle Specialist Group. Chelonian Research Monographs 8:1–472. doi:10.3854/crm.8.checklist.atlas.v9.2021. - get paper here
 
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