Chrysemys

Chrysemys
Temporal range: Neogene–recent[1]
Painted turtle (Chrysemys picta)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Suborder: Cryptodira
Family: Emydidae
Subfamily: Deirochelyinae
Genus: Chrysemys
Gray, 1844
Species

See text

Chrysemys is a genus of turtles in the family Emydidae. They are found throughout most of North America.[2] The species in the genus include the painted and the southern painted turtles.

Reproduction

Chrysemys have temperature dependent sex determination. During egg incubation, lower temperatures produce males while higher temperatures produce females.[3]

Species

There are two extant species:[2]

Image Scientific name Common name Distribution
Chrysemys dorsalis Agassiz, 1857 Southern painted turtle south-central United States.
Chrysemys picta Schneider, 1783) Painted turtle southern Canada to northern Mexico

Fossil record

Several fossil species have been described, dating back to the Miocene.

Fossil species

  • Chrysemys corniculata[4]
  • Chrysemys isoni[6]
  • Chrisemys timidus (may belong to distinct genus)[5]
  • Chrisemys williamsi (may belong to distinct genus)[5]

References

  1. ^ Ernst, Carl H.; Lovich, Jeffrey E. (2009). Turtles of the United States and Canada. JHU Press. pp. 184–185. ISBN 978-0-8018-9121-2.
  2. ^ a b Chrysemys at the Reptarium.cz Reptile Database. Accessed 12 October 2021.
  3. ^ Bull, J.J. (1980). "Sex Determination in Reptiles". Quarterly Review of Biology. 55 (1): 3–21. doi:10.1086/411613.
  4. ^ Jasinski, S.E. (2022). "A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles". Zoological Journal of the Linnean Society. zlac084: 149–183. doi:10.1093/zoolinnean/zlac084.
  5. ^ a b c Jasinski, S.E. (2018). "A new slider turtle (Testudines: Emydidae: Deirochelyinae: Trachemys) from the late Hemphillian (late Miocene/early Pliocene) of eastern Tennessee and the evolution of the deirochelyines". PeerJ. 6 e4338. doi:10.7717/peerj.4338. PMC 5815335. PMID 29456887.
  6. ^ Weems, R.E.; George, R.A. (2013). "Amphibians and Nonmarine Turtles from the Miocene Calvert Formation of Delaware, Maryland, and Virginia (USA)". Journal of Paleontology. 87 (4): 570–588. Bibcode:2013JPal...87..570W. doi:10.1666/12-071. S2CID 86171253.

[1]


  1. ^ Bull, J.J. (1980). "Sex Determination in Reptiles". Quarterly Review of Biology. 55 (1): 3–21. doi:10.1086/411613.
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