Sinodiscus

Sinodiscus; Temporal range: Late Atdabanian
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Trilobita
Order:	Agnostida
Suborder:	Eodiscina
Superfamily:	Eodiscoidea
Family:	Calodiscidae
Genus:	Sinodiscus; Chang, in Lu et al. 1974
species
	†S. shipaiensis Chang in Lu et al. 1974 (type) ; †S. changyangensis Zhang in Zhou et al., 1977 ; †S. kunshanensis Zhang & Zhou, 1985 ; †S. trisulcatus Zhang & Zhou, 1985 ;

Sinodiscus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the late Atdabanian stage, which lasted from 530 to 524 million years ago during the early part of the Cambrian Period.^[5]

*S. changyangensis* Zhang, mature (holaspid) exoskeleton as reconstructed by Dai & Zhang (2013).

Dai and Zhang (2013) were able to reconstruct both the morphology and ontogeny of S. changyangensis Zhang based on a large number of well preserved examples from the lower Cambrian Shuijingtuo Formation in Changyang, Hubei Province, South China.^[6]

^ LU, Y. H., CHANG, W. T., QIAN, Y., ZHU, Z. L., LIN, H. L., ZHOU, Z., QIAN, Y., ZHANG, S. and WU, H. 1974. Cambrian trilobites. 82–107. In NANJING INSTITUTE OF GEOLOGY AND PALAEONTOLOGY, ACADEMIC SINICA (ed.). Handbook of stratigraphy and palaeontology, Southwest China. Science Press, Beijing, 454 pp. [In Chinese].
^ YANG, A., ZHU, M., ZHANG, J. and LI, G. 2003. Early Cambrian eodiscoid trilobites of the Yangtze Platform and their stratigraphic implications. Progress in Natural Science 13(11): 861 – 866.
^ ZHOU, T. M., LIU, Y., MENG, X. S. and SUN, Z. H. 1977. Trilobita. 107 – 266. In GEOLOGICAL BUREAU OF HENAN PROVINCE (ed.). Palaeontological atlas of Central and South China. Guizhou (1). Geological Publishing House, Beijing, 420 pp. [In Chinese].
^ ZHANG, Q. Z. and ZHOU, Z. M. 1985. Early Cambrian trilobite fauna of Kunshan, Jiangsu. Acta Palaeontologica Sinica 24(2): 259 – 266.
^ SEPKOSKI, J. (2002). "A compendium of fossil marine animal genera (Trilobita entry)". Bulletins of American Paleontology. 364: 560. Retrieved 2008-01-12.
^ DAI, T., ZHANG, X. 2013. Morphology and ontogeny of the eodiscoid trilobite Sinodiscus changyangensis from the lower Cambrian of South China. Palaeontology, 56, 2, 411 – 420. https://doi.org/10.1111/j.1475-4983.2012.01208.x

[1] LU, Y. H., CHANG, W. T., QIAN, Y., ZHU, Z. L., LIN, H. L., ZHOU, Z., QIAN, Y., ZHANG, S. and WU, H. 1974. Cambrian trilobites. 82–107. In NANJING INSTITUTE OF GEOLOGY AND PALAEONTOLOGY, ACADEMIC SINICA (ed.). Handbook of stratigraphy and palaeontology, Southwest China. Science Press, Beijing, 454 pp. [In Chinese].

[2] YANG, A., ZHU, M., ZHANG, J. and LI, G. 2003. Early Cambrian eodiscoid trilobites of the Yangtze Platform and their stratigraphic implications. Progress in Natural Science 13(11): 861 – 866.

[3] ZHOU, T. M., LIU, Y., MENG, X. S. and SUN, Z. H. 1977. Trilobita. 107 – 266. In GEOLOGICAL BUREAU OF HENAN PROVINCE (ed.). Palaeontological atlas of Central and South China. Guizhou (1). Geological Publishing House, Beijing, 420 pp. [In Chinese].

[4] ZHANG, Q. Z. and ZHOU, Z. M. 1985. Early Cambrian trilobite fauna of Kunshan, Jiangsu. Acta Palaeontologica Sinica 24(2): 259 – 266.

[Sepkoski-5] SEPKOSKI, J. (2002). "A compendium of fossil marine animal genera (Trilobita entry)". Bulletins of American Paleontology. 364: 560. Retrieved 2008-01-12.

[6] DAI, T., ZHANG, X. 2013. Morphology and ontogeny of the eodiscoid trilobite Sinodiscus changyangensis from the lower Cambrian of South China. Palaeontology, 56, 2, 411 – 420. https://doi.org/10.1111/j.1475-4983.2012.01208.x

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