A new Chengyuchelys latimarginalis record from the Upper Jurassic Shangshaximaio Formation of Sichuan Basin, China, and the intraspecific variation

References

• BGMRGP (Bureau of Geology and Mineral Resources of Guizhou Province). 1997. Stratigraphy (Lithostratic) of Guizhou Province. Wuhan: China University of Geosciences Press; p. 306.
   Google Scholar
• BGMRSP (Bureau of Geology and Mineral Resources of Sichuan Province). 1991. Regional geology of Sichuan province. Beijing: Geological Publishing House Geological Memoirs Press; p. 11.
   Google Scholar
• Brinkman DB, Eberth DA, Xu X, Clark JM, Wu XC. 2013. Turtles from the Jurassic Shishugou Formation of the Junggar Basin, People’s Republic of China, with comments on the basicranial region of basal eucryptodires. Morphology and evolution of turtles. Dordrecht: Springer; p. 147–172. doi:10.1007/978-94-007-4309-0_10.
   Google Scholar
• Brinkman DB, Li JL, Ye XK. 2008. Order Testudines. In: Li JL, Wu XC, Zhang FC, editors. The Chinese Fossil Reptiles and Their Kin. Beijing: Science Press; p. 35–102.
   Google Scholar
• Brinkman DB, Peng JH. 1993. New material of Sinemys (Testudines, Sinemydidae) from the Early Cretaceous of China. Can J Earth Sci. 30(10):2139–2152. doi:10.1139/e93-185.
   Web of Science ®Google Scholar
• Cherepanov GO. 2006. Ontogenesis and evolution of horny parts of the turtle shell. Fossil Turtle Research. 1:19–33.
   Google Scholar
• Cherepanov GO. 2016. New material of Sinemys (Testudines, Sinemydidae) from the Early Cretaceous of China. Canadian Journal of Earth Sciences. 50(14):641–1648. doi:10.1139/e93-185.
   Google Scholar
• Cope ED. 1868. On the origin of genera. Proceedings of the Academy of Natural Sciences; Philadelphia. 20:230–242.
   Google Scholar
• Danilov IG, Krasnolutskii SA. 2012. A new Xinjiangchelyid turtle from the Middle Jurassic of Siberia, Russia. Symposium on turtle evolution 2012. Tubingen, p. 16.
   Google Scholar
• Danilov IG, Parham JF. 2007. The type series of ‘Sinemys’ wuerhoensis, a problematic turtle from the Lower Cretaceous of China, includes at least three taxa. Palaeontology. 50:431–444. doi:10.1111/j.1475-4983.2006.00632.x
   Web of Science ®Google Scholar
• Foth C, Bona P, Desojo JB. 2015. Intraspecific variation in the skull morphology of the black caiman Melanosuchus Niger (Alligatoridae, Caimaninae). Acta Zoologica. 96(1):1–13. doi:10.1111/azo.12045.
   Web of Science ®Google Scholar
• Gaffney ES. 1975. A taxonomic revision of the Jurassic turtles Portlandemys and Plesiochelys. American Museum Novitates. 2574:1–19.
   Google Scholar
• Gaffney ES, Meylan PA. 1988. A phylogeny of turtles. In The Phylogeny and Classification of the Tetrapods (ed. M. J. Benton). Oxford: Clarendon Press; p. 157–219.
   Google Scholar
• Garbin RC 2019. Intraspecific Variation in the Shell of Geoemydidae Turtles: Applications to Systematics and Paleontology (Doctoral dissertation, University of Fribourg (Switzerland). doi:10.13140/RG.2.2.21355.77600.
   Google Scholar
• Garbin RC, Ascarrunz E, Joyce WG. 2018. Polymorphic characters in the reconstruction of the phylogeny of geoemydid turtles. Zool J Linn Soc. 184(3):896–918. doi:10.1093/zoolinnean/zlx106.
   Web of Science ®Google Scholar
• Garbin RC, Karlguth DT, Fernandes DS, Pinto RR. 2016. Morphological variation in the Brazilian Radiated Swamp turtle Acanthochelys radiolata (Mikan, 1820) (Testudines: Chelidae). Zootaxa. 4105:45–64. doi:10.11646/zootaxa.4105.1.2
   PubMed Web of Science ®Google Scholar
• Gou ZH, Zhao B, Wu S. 2000. Jurassic system of Dayi, Chongzhou, Wenchuan and Dujiangyan, Sichuan. Journal of the Chengdu University of Technology. 27. 31–39. in Chinese with English abstract
   Google Scholar
• Guerrero A, Pérez-García A. 2021a. Shell Anomalies in the European Aquatic Stem Turtle Pleurosternon bullockii (Paracryptodira, Pleurosternidae). Diversity. 13(11):518. doi:10.3390/d13110518.
   Google Scholar
• Guerrero A, Pérez-García A. 2021b. Morphological variability and shell characterization of the European uppermost Jurassic to lowermost Cretaceous stem turtle Pleurosternon bullockii (Paracryptodira, Pleurosternidae). Cretaceous Research. 125:104872. doi:10.1016/j.cretres.2021.104872.
   Web of Science ®Google Scholar
• Guerrero A, Pérez-García A. 2021c. Analysis of the sexual variability in the shell of the Spanish Upper Cretaceous turtle Dortoka vasconica (Pan-Pleurodira, Dortokidae). Spanish Journal of Palaeontology. 36(2):149–162. doi:10.7203/sjp.36.2.21018.
   Google Scholar
• Gu ZW, Huang BY, Chen CZ. 1976. Fossil Lamellibranchiata of China. Beijing: Science Press; p. 1–522.
   Google Scholar
• Hervet S. 2004. Systematic of the “Palaeochelys sensu lato–Mauremys” group (Chelonii, Testudinoidea) from the Tertiary of Western Europe: principal results. Annales de Paléontologie. 90(1):13–78.
   Google Scholar
• Huang HY, He DF, Li YQ, Li J, Zhang L. 2018 Silurian tectonic-sedimentary setting and basin evolution in the Sichuan area, southwest China: implications for palaeogeographic reconstructions. Marine and Petroleum Geology 92 403–423. 10.1016/j.marpetgeo.2017.11.006Get rights and content
   Web of Science ®Google Scholar
• Hu XF, Li L, Dai H, Wang P, Buffetaut E, Wei G, Tong HY. 2020. Turtle remains from the Middle Jurassic Xintiangou Formation of Yunyang, Sichuan Basin, China. Annales de Paléontologie. 106(4):102440. doi:10.1016/j.annpal.2020.102440.
   Web of Science ®Google Scholar
• Kaznyshkin MN, Nalbandyan LA, Nessov LA. 1990. Middle and Late Jurassic turtles of Fergana (Kirghiz SSR). Ezhegodnik Vsesoyuznogo Paleontologicheskogo Obshchestva. 33:185–204.
   Google Scholar
• Kuppler J, Höfers MK, Wiesmann L, Junker RR. 2016. Time-invariant differences between plant individuals in interactions with arthropods correlate with intraspecific variation in plant phenology, morphology and floral scent. New Phytologist. 210(4):1357–1368. doi:10.1111/nph.13858.
   PubMed Web of Science ®Google Scholar
• Li YQ, He DF, Chen LB, Mei QH, Li CX, Zhang L. 2016. Cretaceous sedimentary basins in Sichuan, SW China: restoration of tectonic and depositional environments. Cretaceous Research. 57:50–65. doi:10.1016/j.cretres.2015.07.013
   Web of Science ®Google Scholar
• Linnaeus C. 1758. Systema Naturae. Stockholm: Impensis Direct. Laurentii Salvii; p. 824.
   Google Scholar
• Liu Y. 2021. Present Situation and Prospect of Zircon Geochronology of Jurassic Strata in the Sichuan Basin. Acta Geologica Sichuan. 41(3):366–376. doi:10.3969/j.1006-0995.2021.03.003.
   Google Scholar
• Liu SG, Yang Y, Deng B, Zhong Y, Wen L, Sun W, Li ZW, Jansa L, Li JX, Song JM, et al. 2021. Tectonic evolution of the Sichuan basin, southwest China. Earth-Science Reviews. 213:103470. doi:10.1016/j.earscirev.2020.103470
   Web of Science ®Google Scholar
• Li LQ, Wang YD, Vajda V, Liu ZS. 2018. Late Triassic ecosystem variations inferred by palynological records from Hechuan, southern Sichuan Basin, ChinaL. Geol Mag. 155(8):1793–1810. doi:10.1017/S0016756817000735.
   Web of Science ®Google Scholar
• Lovich JE, Ernst CH, Zappalorti RT, Herman DW. 1998. Geographic variation in growth and sexual size dimorphism of bog turtles (Clemmys muhlenbergii). The American Midland Naturalist. 139(1):69–78. doi:10.1674/0003-0031(1998)139[0069:GVIGAS]2.0.CO;2.
   Web of Science ®Google Scholar
• Matzke AT, Maisch MW, Ge S, Pfretzschner HU, Stöhr H. 2004. A new xinjiangchelyid turtle (Testudines, Eucryptodira) from the Jurassic Qigu Formation of the Southern Junggar Basin, Xinjiang, North‐West China. Palaeontology. 47(5):1267–1299. doi:10.1111/j.0031-0239.2004.00410.x.
   Google Scholar
• Matzke AT, Maisch MW, Sun GE, Pfretzschner HU, Stöhr H. 2005. A new Middle Jurassic xinjiangchelyid turtle (Testudines; Eucryptodira) from China (Xinjiang, Junggar Basin). J Vertebr Paleontol. 25(1):63–70. doi:10.1671/0272-4634(2005)025[0063:ANMJXT]2.0.CO;2.
   Web of Science ®Google Scholar
• Moustakas-Verho JE, Cherepanov GO. 2015. The integumental appendages of the turtle shell: an evo‐devo perspective. J Exp Zool B Mol Dev Evol. 324(3):221–229. doi:10.1002/jez.b.22619.
   PubMed Web of Science ®Google Scholar
• Moustakas-Verho JE, Zimm R, Cebra-Thomas J, Lempiäinen NK, Kallonen A, Mitchell KL, Hämäläinen K, Salazar-Ciudad I, Jernvall J, Gilbert SF. 2014. The origin and loss of periodic patterning in the turtle shell. Development. 141(15):3033–3039. doi:10.1242/dev.109041.
   PubMed Web of Science ®Google Scholar
• Nessov LA. 1995. On some Mesozoic turtles of the Fergana depression (Kyrgyzstan) and Dzhungar Alatau ridge (Kazakhstan). Russian Journal of Herpetology. 2(2):134–141.
   Google Scholar
• Obraztsova EM, Krasnolutskii SA, Sukhanov VB, Danilov. 2022. Xinjiangchelyid turtles from the Middle Jurassic of the Berezovsk coal mine (Krasnoyarsk Territory, Russia): systematics, skeletal morphology, variation, relationships and palaeobiogeographic implications. J Syst Paleontol. 20(1):2093662. doi:10.1080/14772019.2022.2093662.
   Web of Science ®Google Scholar
• Pan HZ. 1980. Middle Jurassic-Lower Cretaceous non-marine gastropods from Gansu Province. In: Xi’an Geological and Mineralogical Institute, editors. Paleontological Atlas of NW China (Shanxi, Gansu, and Ningxia), 3 (Mesozoic and Cenozoic). Beijing: Geological Publishing House; p. 30–43.
   Google Scholar
• Peng JH, Brinkman DB. 1993. New material of Xinjiangchelys (Reptilia: Testudines) from the Late Jurassic Qigu Formation (Shishugou Group) of the Pingfengshan locality, Junggar Basin, Xinjiang. Can J Earth Sci. 30(10):2013–2026. doi:10.1139/e93-177.
   Web of Science ®Google Scholar
• Peng GZ, Ye Y, Gao YH, Shu CK, Jiang S. 2005. Jurassic Dinosaur Faunas in Zigong. Chengdu: Sichuan People’s Publishing House; p. 38–40. in Chinese
   Google Scholar
• Pritchard PCH. 1988. A survey of the neural bone variation among recent chelonian species, with functional interpretations. Acta Zoologica Cracoviensia. 31(2):625–686.
   Google Scholar
• Rabi M, Joyce WG, Wings O. 2010. A review of the Mesozoic turtles of the Junggar Basin (Xinjiang, Northwest China) and the paleobiogeography of Jurassic to Early Cretaceous Asian Testudines. Palaeobiodiversity and Palaeoenvironments. 90(3):259–273. doi:10.1007/s12549-010-0031-3.
   Google Scholar
• Rabi M, Sukhanov VB, Egorova VN, Danilov I, Joyce WG. 2014. Osteology, relationships, and ecology of Annemys (Testudines, Eucryptodira) from the Late Jurassic of Shar Teg, Mongolia, and phylogenetic definitions for Xinjiangchelyidae, Sinemydidae, and Macrobaenidae. J Vertebr Paleontol. 34(2):327–352. doi:10.1080/02724634.2013.807274.
   Web of Science ®Google Scholar
• Rabi M, Zhou CF, Wings O, Ge S, Joyce WG. 2013. A new xinjiangchelyid turtle from the Middle Jurassic of Xinjiang, China and the evolution of the basipterygoid process in Mesozoic turtles. BMC Evol Biol. 13(1):1–29. doi:10.1186/1471-2148-13-203.
   PubMedGoogle Scholar
• Sánchez-Villagra MR, Pritchard PCH, Paolillo A, Linares OJ. 1995. Geographic variation in the Matamata turtle, Chelus fimbriatus, with observations on its shell morphology and morphometry. Chelonian Conservation and Biology. 1(4):293–300.
   Google Scholar
• Sukhanov VB. 2000. Mesozoic turtles of Middle and Central Asia. The Age of Dinosaurs in Russia and Mongolia. 500:309–367.
   Google Scholar
• Sukhanov VB, Narmandakh P. 2006. New taxa of Mesozoic turtles from Mongolia. In: Danilov IG, Parham JF, editors. Russian Journal of Herpetology. Vol. I. Zoological Institute of the Russian Academy of Sciences, St. Petersburg; p. 19–127.
   Google Scholar
• Sze HC, Chow TY. 1962. Mesozoic continental deposits of China. Beijing: Science Press; p. 1–180.
   Google Scholar
• Tong HY. 2017. Testudines. In: Li J, Tong H, editors. Parareptilians, Captorhines and Testudines, Palaeovertebrata Sinica. Vol. II: Fasc (2) Beijing: Science Press, p. 92–365.
   Google Scholar
• Tong HY, Danilov I, Ye Y, Ouyang H, Peng GZ. 2012b. Middle Jurassic turtles from the Sichuan Basin, China: a review. Geol Mag. 149(4):675–695. doi:10.1017/S0016756811000859.
   Web of Science ®Google Scholar
• Tong HY, Danilov I, Ye Y, Ouyang H, Peng G, Li K. 2012a. A revision of xinjiangchelyid turtles from the Late Jurassic of Sichuan Basin, China. Annales de Paléontologie. 98(2):73–114. doi:10.1016/j.annpal.2012.01.001.
   Web of Science ®Google Scholar
• Tong HY, Dong ZM, Wang T. 2015. A revision of Xinjiangchelys oshanensis, and new material from the Middle Jurassic of Lufeng, Yunnan Province, China. Bulletin de la Société géologique de France. 186(1):43–49. doi:10.2113/gssgfbull.186.1.43.
   Google Scholar
• Tong HY, Li L, Ouyang H. 2014. A revision of Sinaspideretes wimani Young & Chow, 1953 (Testudines: Cryptodira: Trionychoidae) from the Jurassic of the Sichuan Basin, China. Geol Mag. 151(4):600–610. doi:10.1017/S0016756813000575.
   Web of Science ®Google Scholar
• Tong HY, Naksri W, Buffetaut E, Suteethorn S, Suteethorn V, Chantasit P, Claude J. 2019. Kalasinemys, a new xinjiangchelyid turtle from the Late Jurassic of NE Thailand. Geol Mag. 147:1645–1656. doi:10.1017/S0016756818000791
   Google Scholar
• Vitek NS. 2018. Delineating modern variation from extinct morphology in the fossil record using shells of the Eastern Box Turtle (Terrapene Carolina). PLoS ONE. 13(3):e0193437. doi:10.1371/journal.pone.0193437.
   PubMed Web of Science ®Google Scholar
• Wang YD, Fu H, Xie P, Huang S, Li K, Li G, Liu ZS, Yu JX, Pan YH, Tian N, et al. 2010. The terrestrial Triassic and Jurassic Systems in the Sichuan Basin, China. Hefei: China University of Science and Technology Press; p. 1–216.
   Google Scholar
• Wang Z, Huang RJ, Wang S. 1976. Mesozoic and Cenozoic charophytes from Yunnan. In: Mesozoic.
   Google Scholar
• Wang QW, Liang B, Kan ZZ, Li K, Zhu B, Ji XT. 2008. Paleoenvironmental Reconstruction of Mesozoic Dinosaurs Fauna in Sichuan Basin. Beijing: Geological Publishing House; p. in Chinese with English abstract
   Google Scholar
• Wang J, Norell MA, Pei R, Ye Y, Chang SC. 2019. Surprisingly young age for the mamenchisaurid sauropods in South China. Cretaceous Research. 104:104176. doi:10.1016/j.cretres.2019.07.006
   Web of Science ®Google Scholar
• Wings O, Rabi M, Schneider JW, Schwermann L, Sun G, Zhou CF, Joyce WG. 2012. An enormous Jurassic turtle bone bed from the Turpan Basin of Xinjiang, China. Naturwissenschaften. 99(11):925–935. doi:10.1007/s00114-012-0974-5.
   PubMedGoogle Scholar
• Xing LD, Lockley MG, Chen W, GierlinskiI GD, Li JJ, Persons IVWS, Matsukawa W, Ye Y, Gingras MK, Wang CW. 2013a. Two theropod track assemblages from the Jurassic of Chongqing, China, and the Jurassic stratigraphy of Sichuan Basin. Vertebrata Palasiatica. 51(2):107–130.
   Google Scholar
• Xing LD, Lockley MG, Piñuela L, Zhang JP, Klein H, Li DQ, Wang FP. 2013b. Pterosaur trackways from the lower cretaceous Jiaguan formation (Barremian–Albian) of Qijiang, Southwest China. Palaeogeogr Palaeoclimatol Palaeoecol. 392:177–185. doi:10.1016/j.palaeo.2013.09.003.
   Web of Science ®Google Scholar
• Ye XK. 1986. A Jurassic turtle from Junggar, Xinjiang. Vertebrata Pal Asiatica. 24:171–181.
   Web of Science ®Google Scholar
• Young CC, Chow MC. 1953. New fossil reptiles from Szechuan, China. Acta Scientica Sinica. 2:216–243.
   Google Scholar
• Zhang F, Hu XF, Wang GQ, Xiong C, Hu YD. 2015. Jurassic petrified wood from Qijiang in Chongqing and its scientific significance. Acta Palaeontologica Sinica. 54(2): 261–266. in Chinese with English abstract
   Google Scholar
• Zhou YX, Dai H, Yu HD, Ma QY, Tan C, Li N, Lin Y, Li DL. 2022. Zircon geochronology of the new dinosaur fauna in the Middle Jurassic lower Shaximiao Formation in Chongqing, SW China. Palaeogeogr Palaeoclimatol Palaeoecol. 592:110894. doi:10.1016/j.palaeo.2022.110894
   Web of Science ®Google Scholar
• Zimm R 2019. On the development of the turtle scute pattern and the origins of its variation. Ph.D. Thesis, University of Helsinki, Helsinki (Finland).
   Google Scholar
• Zong H, Shi H. 1997. The Jurassic System of Dujiangyan, Pengzhou, and Shifang, Sichuan. Journal of Stratigraphy. 21(3): 192–202. in Chinese with English abstract
   Google Scholar