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ABSTRACT
The Paleogene nominal species Osteochilus sanshuiensis, Osteochilus longipinnatus, and Osteochilus laticorpus from Sanshui Basin, China, were originally assigned to the extant genus Osteochilus, in the family Cyprinidae. They were lately considered to belong to Catostomidae or the extinct family Jianghanichthyidae. However, the type specimens of the above nominal species have been deemed to be lost, which hindered the corroborated taxonomic assignment of the species. After multiple attempts and inter-institutional efforts, a series of original type specimens were recovered from a warehouse. We herein report the resurfacing and relocation of the specimens, as well as clarify the taxonomic status of those nominal species. Based on the type specimens and our recently collected specimens in the same locality, we propose to revise the three nominal species as one species †Jianghanichthys sanshuiensis comb. nov. One of the best-preserved original type specimens, SYSU R. 741177 is designated to be the lectotype.
DISCLOSURE STATEMENT
No potential conflict of interest was reported by the author(s).
ACKNOWLEDGMENTS
The authors thank Zhao Wang (IVPP) for specimen preparation, Wei Gao (IVPP) for photography, Haohong Ou (SYSU) for facility access, as well as Xianqiu Zhang (Sinopec Xinxing Oil Guangzhou Company), Jiutong Feng (IVPP), Jianhua Jin, Xinkai Wu, He Chen, Lanlin Xianghe, Jiarong Hu, and Weiye Huang (SYSU) for field assistance. The following collection scientists and staff have provided valuable access and help: Fang Zheng (IVPP), Binhe Geng (IVPP), John Brunner (UALVP), Liwu Lu (GMC), Kevin Seymour (ROM), Margret Currie (CMN), Barbara Brown (AMNH), Radford Arindell (AMNH), and Alana Gishlick (AMNH). National Natural Science Foundation of China Grant 41862001 to G. C. and Open Grant of State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing, China) to J. L. supported this research.
AUTHOR CONTRIBUTIONS
JL designed the project and drafted the manuscript, MC, JZ, GC, and CS gathered the data, and JL, MC, and JZ analyzed the data. All authors edited the manuscript.
DATA AVAILABILITY STATEMENT
The specimens that support the findings of this study are openly available in the paleontology collection at Sun Yat-sen University, [Zhuhai], China, reference numbers SYSU R. 741177, SYSU R.741127-1, SYSU H.74131, SYSU R. 741126, and SYSU R.741128.