Gutingichthys, Lin & Wu & Lin & Chien, 2023

Lin, Chien-Hsiang, Wu, Siao-Man, Lin, Chia-Yen & Chien, Chi-Wei, 2023, Early Pliocene otolith assemblages from the outer-shelf environment reveal the establishment of mesopelagic fish fauna over 3 million years ago in southwestern Taiwan, Swiss Journal of Palaeontology (23) 142 (1), pp. 1-40 : 19

publication ID

https://doi.org/10.1186/s13358-023-00288-0

persistent identifier

https://treatment.plazi.org/id/0392F83E-B053-FFC5-FF20-19B6FD2EB6D2

treatment provided by

Felipe

scientific name

Gutingichthys
status

gen. nov.

Genus Gutingichthys gen. nov. Lin

Type species Gutingichthys changi sp. nov.

Etymology Te genus is named after the type horizon, the Gutingkeng Formation.

Diagnosis OL/OH = 1.79–2.75, OL/OT = 4.11–4.55. Elongate, rectangular otoliths with vertical or obtuse posterior and anterior rims and nearly horizontal, straight dorsal and ventral rims. Sulcus filled with a single oblong colliculum, entirely surrounded by elevated cristae forming a broad oval bulge around the sulcus.

Remarks Te distinct characteristics of the elongated otoliths, including the vertical posterior and anterior rims, oblong sulcus that is not inclined, and the presence of thick and swollen cristae, are highly characteristic. Such swollen cristae are rarely observed in extant bythitids, with an example being Tuamotuichthys bispinosus MØller et al., 2004 (see MØller et al., 2004 for figures). Tese otoliths clearly represent a fossil species belonging to an extinct genus (Schwarzhans, pers. comm. 2022).

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