Shuotheriidae is a small family of
Jurassicmammaliaforms whose remains are found in China, England and possibly Russia. They have been proposed to be close relatives of
Australosphenida (which often controversially includes
monotremes), together forming the clade
Yinotheria. However, some studies suggest shuotheres are closer to
therians than to monotremes,[3][4][5] or that australosphenidans and therians are more closely related to each other than either are to shuotheres,[6] with a 2024 study suggesting that shuotheriids were closely related to
Docodonta outside of the Mammalia crown group.[7]
References
^Mao, F.; Li, Z.; Wang, Z.; Zhang, C.; Rich, T.; Vickers-Rich, P.; Meng, J. (2024). "Jurassic shuotheriids show earliest dental diversification of mammaliaforms". Nature.
doi:
10.1038/s41586-024-07258-7.
^
abWang, Y.-Q. and Li, C.-K. 2016. Reconsideration of the systematic position of the Middle
Jurassic mammaliaforms Itatodon and Paritatodon. Palaeontologia Polonica 67, 249–256.
^Rougier, Guillermo W.; Martinelli, Agustín G.; Forasiepi, Analía M.; Novacek, Michael J., New Jurassic mammals from Patagonia, Argentina : a reappraisal of australosphenidan morphology and interrelationships ; American Museum Novitates, no. 3566, 2007
^Tom Rich, Patricia Vickers Rich, Palaeobiogeography of Mesozoic Mammals – Revisited, Article · January 2012
doi:
10.1007/978-90-481-3428-1_32
^Averianov, A. O.; Lopatin, A. V. (July 2014). "On the phylogenetic position of monotremes (Mammalia, Monotremata)". Paleontological Journal. 48 (4): 426–446.
doi:
10.1134/s0031030114040042.
ISSN0031-0301.
S2CID84039223 – via Scientific Index.
Zofia Kielan-Jaworowska, Richard L. Cifelli, and Zhe-Xi Luo, Mammals from the Age of Dinosaurs: Origins, Evolution, and Structure (New York: Columbia University Press, 2004), 214–215.